./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/cmp-freed-ptr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/cmp-freed-ptr.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3444bab46e3acd40907f623c997f9115bc97543a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free) --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:00:32,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:00:32,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:00:32,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:00:32,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:00:32,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:00:32,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:00:32,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:00:32,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:00:32,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:00:32,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:00:32,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:00:32,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:00:32,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:00:32,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:00:32,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:00:32,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:00:32,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:00:32,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:00:32,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:00:32,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:00:32,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:00:32,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:00:32,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:00:32,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:00:32,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:00:32,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:00:32,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:00:32,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:00:32,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:00:32,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:00:32,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:00:32,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:00:32,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:00:32,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:00:32,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:00:32,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:00:32,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:00:32,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:00:32,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:00:32,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:00:32,714 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 18:00:32,738 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:00:32,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:00:32,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:00:32,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:00:32,740 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:00:32,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:00:32,741 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:00:32,741 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:00:32,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:00:32,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:00:32,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:00:32,742 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:00:32,742 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:00:32,743 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:00:32,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:00:32,743 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:00:32,744 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:00:32,744 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:00:32,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:00:32,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:00:32,745 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:00:32,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:00:32,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:00:32,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:00:32,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:00:32,746 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:00:32,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:00:32,747 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:00:32,747 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3444bab46e3acd40907f623c997f9115bc97543a [2020-10-19 18:00:33,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:00:33,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:00:33,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:00:33,068 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:00:33,069 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:00:33,069 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/cmp-freed-ptr.i [2020-10-19 18:00:33,125 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6fd9f990/3b1c632ca42b4c9fb60cfdfb4344e8a1/FLAG0e1c6eb54 [2020-10-19 18:00:33,537 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:00:33,538 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/cmp-freed-ptr.i [2020-10-19 18:00:33,550 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6fd9f990/3b1c632ca42b4c9fb60cfdfb4344e8a1/FLAG0e1c6eb54 [2020-10-19 18:00:33,861 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6fd9f990/3b1c632ca42b4c9fb60cfdfb4344e8a1 [2020-10-19 18:00:33,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:00:33,871 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:00:33,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:00:33,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:00:33,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:00:33,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:00:33" (1/1) ... [2020-10-19 18:00:33,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e5ac2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:00:33, skipping insertion in model container [2020-10-19 18:00:33,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:00:33" (1/1) ... [2020-10-19 18:00:33,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:00:33,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:00:34,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:00:34,226 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:00:34,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:00:34,382 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:00:34,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:00:34 WrapperNode [2020-10-19 18:00:34,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:00:34,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:00:34,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:00:34,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:00:34,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:00:34" (1/1) ... [2020-10-19 18:00:34,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:00:34" (1/1) ... [2020-10-19 18:00:34,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:00:34" (1/1) ... [2020-10-19 18:00:34,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:00:34" (1/1) ... [2020-10-19 18:00:34,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:00:34" (1/1) ... [2020-10-19 18:00:34,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:00:34" (1/1) ... [2020-10-19 18:00:34,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:00:34" (1/1) ... [2020-10-19 18:00:34,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:00:34,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:00:34,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:00:34,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:00:34,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:00:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:00:34,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:00:34,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:00:34,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 18:00:34,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 18:00:34,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 18:00:34,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 18:00:34,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 18:00:34,496 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:00:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:00:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:00:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:00:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:00:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:00:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:00:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:00:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:00:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:00:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:00:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:00:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:00:34,499 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:00:34,499 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:00:34,499 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:00:34,499 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:00:34,499 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 18:00:34,500 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 18:00:34,500 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 18:00:34,500 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 18:00:34,500 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 18:00:34,501 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:00:34,501 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:00:34,501 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:00:34,501 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:00:34,501 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:00:34,502 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:00:34,502 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:00:34,502 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:00:34,502 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:00:34,503 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:00:34,503 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:00:34,503 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:00:34,503 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:00:34,503 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:00:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:00:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:00:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:00:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:00:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:00:34,505 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:00:34,505 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:00:34,505 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:00:34,505 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:00:34,505 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:00:34,506 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:00:34,506 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:00:34,506 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:00:34,506 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:00:34,507 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:00:34,507 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:00:34,507 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:00:34,507 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:00:34,507 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:00:34,508 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:00:34,508 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:00:34,508 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:00:34,508 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:00:34,509 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:00:34,509 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:00:34,509 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:00:34,509 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:00:34,510 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:00:34,510 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:00:34,510 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:00:34,510 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:00:34,511 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:00:34,511 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:00:34,511 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:00:34,511 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:00:34,511 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:00:34,512 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:00:34,512 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:00:34,512 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:00:34,512 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:00:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:00:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:00:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:00:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:00:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:00:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:00:34,515 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:00:34,515 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:00:34,515 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:00:34,515 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:00:34,516 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:00:34,516 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:00:34,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:00:34,516 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:00:34,516 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:00:34,517 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:00:34,517 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:00:34,517 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:00:34,517 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:00:34,518 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:00:34,518 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:00:34,518 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:00:34,518 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:00:34,518 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:00:34,519 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:00:34,519 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:00:34,519 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:00:34,519 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:00:34,520 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:00:34,520 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:00:34,520 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:00:34,520 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:00:34,520 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:00:34,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:00:34,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:00:34,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:00:34,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:00:35,086 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:00:35,086 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-19 18:00:35,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:00:35 BoogieIcfgContainer [2020-10-19 18:00:35,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:00:35,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:00:35,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:00:35,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:00:35,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:00:33" (1/3) ... [2020-10-19 18:00:35,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6cecde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:00:35, skipping insertion in model container [2020-10-19 18:00:35,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:00:34" (2/3) ... [2020-10-19 18:00:35,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6cecde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:00:35, skipping insertion in model container [2020-10-19 18:00:35,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:00:35" (3/3) ... [2020-10-19 18:00:35,097 INFO L111 eAbstractionObserver]: Analyzing ICFG cmp-freed-ptr.i [2020-10-19 18:00:35,109 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:00:35,119 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-10-19 18:00:35,133 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-10-19 18:00:35,157 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:00:35,158 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:00:35,158 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:00:35,159 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:00:35,159 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:00:35,160 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:00:35,160 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:00:35,160 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:00:35,188 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-10-19 18:00:35,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:00:35,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:00:35,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:00:35,204 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:00:35,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:00:35,209 INFO L82 PathProgramCache]: Analyzing trace with hash 542822380, now seen corresponding path program 1 times [2020-10-19 18:00:35,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:00:35,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721404324] [2020-10-19 18:00:35,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:00:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:35,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:00:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:00:35,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721404324] [2020-10-19 18:00:35,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:00:35,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:00:35,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511122954] [2020-10-19 18:00:35,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:00:35,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:00:35,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:00:35,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:00:35,442 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2020-10-19 18:00:35,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:00:35,553 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-10-19 18:00:35,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:00:35,556 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-19 18:00:35,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:00:35,571 INFO L225 Difference]: With dead ends: 29 [2020-10-19 18:00:35,572 INFO L226 Difference]: Without dead ends: 26 [2020-10-19 18:00:35,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:00:35,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-19 18:00:35,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-19 18:00:35,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-19 18:00:35,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-10-19 18:00:35,609 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 7 [2020-10-19 18:00:35,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:00:35,609 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-10-19 18:00:35,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:00:35,610 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-10-19 18:00:35,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-19 18:00:35,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:00:35,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:00:35,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:00:35,611 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:00:35,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:00:35,612 INFO L82 PathProgramCache]: Analyzing trace with hash -352375362, now seen corresponding path program 1 times [2020-10-19 18:00:35,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:00:35,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400879574] [2020-10-19 18:00:35,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:00:35,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:35,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:00:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:35,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:00:35,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400879574] [2020-10-19 18:00:35,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:00:35,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:00:35,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669676927] [2020-10-19 18:00:35,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:00:35,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:00:35,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:00:35,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:00:35,674 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 4 states. [2020-10-19 18:00:35,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:00:35,726 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-10-19 18:00:35,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:00:35,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-19 18:00:35,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:00:35,728 INFO L225 Difference]: With dead ends: 25 [2020-10-19 18:00:35,728 INFO L226 Difference]: Without dead ends: 25 [2020-10-19 18:00:35,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:00:35,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-19 18:00:35,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-19 18:00:35,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-19 18:00:35,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-10-19 18:00:35,734 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 8 [2020-10-19 18:00:35,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:00:35,734 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-10-19 18:00:35,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:00:35,735 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-10-19 18:00:35,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:00:35,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:00:35,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:00:35,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:00:35,736 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:00:35,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:00:35,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1961265710, now seen corresponding path program 1 times [2020-10-19 18:00:35,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:00:35,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295816541] [2020-10-19 18:00:35,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:00:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:35,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:00:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:35,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:00:35,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295816541] [2020-10-19 18:00:35,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:00:35,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:00:35,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765074678] [2020-10-19 18:00:35,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:00:35,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:00:35,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:00:35,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:00:35,788 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 4 states. [2020-10-19 18:00:35,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:00:35,834 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-10-19 18:00:35,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:00:35,835 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-19 18:00:35,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:00:35,836 INFO L225 Difference]: With dead ends: 24 [2020-10-19 18:00:35,836 INFO L226 Difference]: Without dead ends: 24 [2020-10-19 18:00:35,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:00:35,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-19 18:00:35,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-19 18:00:35,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-19 18:00:35,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-10-19 18:00:35,841 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 9 [2020-10-19 18:00:35,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:00:35,842 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-10-19 18:00:35,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:00:35,842 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-10-19 18:00:35,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 18:00:35,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:00:35,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:00:35,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:00:35,844 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:00:35,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:00:35,844 INFO L82 PathProgramCache]: Analyzing trace with hash -714294128, now seen corresponding path program 1 times [2020-10-19 18:00:35,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:00:35,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977558416] [2020-10-19 18:00:35,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:00:35,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:35,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:00:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:35,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:00:35,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977558416] [2020-10-19 18:00:35,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:00:35,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:00:35,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088816234] [2020-10-19 18:00:35,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:00:35,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:00:35,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:00:35,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:00:35,894 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 4 states. [2020-10-19 18:00:35,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:00:35,939 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-10-19 18:00:35,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:00:35,940 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-19 18:00:35,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:00:35,941 INFO L225 Difference]: With dead ends: 22 [2020-10-19 18:00:35,941 INFO L226 Difference]: Without dead ends: 22 [2020-10-19 18:00:35,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:00:35,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-19 18:00:35,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-19 18:00:35,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-19 18:00:35,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-10-19 18:00:35,948 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 11 [2020-10-19 18:00:35,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:00:35,948 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-10-19 18:00:35,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:00:35,948 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-10-19 18:00:35,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-19 18:00:35,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:00:35,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:00:35,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:00:35,951 INFO L429 AbstractCegarLoop]: === Iteration 5 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:00:35,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:00:35,951 INFO L82 PathProgramCache]: Analyzing trace with hash -668281437, now seen corresponding path program 1 times [2020-10-19 18:00:35,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:00:35,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972059580] [2020-10-19 18:00:35,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:00:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:36,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:00:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:36,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:00:36,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972059580] [2020-10-19 18:00:36,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:00:36,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:00:36,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992366978] [2020-10-19 18:00:36,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:00:36,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:00:36,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:00:36,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:00:36,067 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 7 states. [2020-10-19 18:00:36,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:00:36,137 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-10-19 18:00:36,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:00:36,138 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-10-19 18:00:36,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:00:36,138 INFO L225 Difference]: With dead ends: 20 [2020-10-19 18:00:36,139 INFO L226 Difference]: Without dead ends: 20 [2020-10-19 18:00:36,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:00:36,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-19 18:00:36,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-19 18:00:36,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-19 18:00:36,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-10-19 18:00:36,142 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 12 [2020-10-19 18:00:36,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:00:36,143 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-10-19 18:00:36,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:00:36,143 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-10-19 18:00:36,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-19 18:00:36,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:00:36,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:00:36,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:00:36,144 INFO L429 AbstractCegarLoop]: === Iteration 6 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:00:36,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:00:36,145 INFO L82 PathProgramCache]: Analyzing trace with hash 758111986, now seen corresponding path program 1 times [2020-10-19 18:00:36,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:00:36,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070117070] [2020-10-19 18:00:36,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:00:36,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:36,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:00:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:36,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:00:36,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070117070] [2020-10-19 18:00:36,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:00:36,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:00:36,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833790285] [2020-10-19 18:00:36,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:00:36,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:00:36,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:00:36,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:00:36,191 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 4 states. [2020-10-19 18:00:36,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:00:36,231 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-10-19 18:00:36,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:00:36,232 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-19 18:00:36,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:00:36,233 INFO L225 Difference]: With dead ends: 22 [2020-10-19 18:00:36,233 INFO L226 Difference]: Without dead ends: 22 [2020-10-19 18:00:36,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:00:36,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-19 18:00:36,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-19 18:00:36,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-19 18:00:36,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-10-19 18:00:36,238 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2020-10-19 18:00:36,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:00:36,238 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-10-19 18:00:36,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:00:36,238 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-10-19 18:00:36,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 18:00:36,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:00:36,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:00:36,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 18:00:36,240 INFO L429 AbstractCegarLoop]: === Iteration 7 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:00:36,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:00:36,240 INFO L82 PathProgramCache]: Analyzing trace with hash 2034300366, now seen corresponding path program 1 times [2020-10-19 18:00:36,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:00:36,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956193687] [2020-10-19 18:00:36,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:00:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:36,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:00:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:00:36,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:00:36,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956193687] [2020-10-19 18:00:36,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:00:36,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:00:36,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735339090] [2020-10-19 18:00:36,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:00:36,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:00:36,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:00:36,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:00:36,381 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 6 states. [2020-10-19 18:00:36,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:00:36,433 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-10-19 18:00:36,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:00:36,434 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-19 18:00:36,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:00:36,435 INFO L225 Difference]: With dead ends: 21 [2020-10-19 18:00:36,435 INFO L226 Difference]: Without dead ends: 17 [2020-10-19 18:00:36,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:00:36,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-19 18:00:36,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-19 18:00:36,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-19 18:00:36,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2020-10-19 18:00:36,439 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 14 [2020-10-19 18:00:36,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:00:36,439 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2020-10-19 18:00:36,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:00:36,440 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2020-10-19 18:00:36,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 18:00:36,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:00:36,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:00:36,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 18:00:36,441 INFO L429 AbstractCegarLoop]: === Iteration 8 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-19 18:00:36,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:00:36,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1976190218, now seen corresponding path program 1 times [2020-10-19 18:00:36,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:00:36,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974263813] [2020-10-19 18:00:36,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:00:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:00:36,457 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:00:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:00:36,478 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:00:36,501 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:00:36,502 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:00:36,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 18:00:36,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:00:36 BoogieIcfgContainer [2020-10-19 18:00:36,531 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:00:36,532 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:00:36,532 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:00:36,532 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:00:36,533 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:00:35" (3/4) ... [2020-10-19 18:00:36,535 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 18:00:36,593 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:00:36,593 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:00:36,596 INFO L168 Benchmark]: Toolchain (without parser) took 2729.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 945.2 MB in the beginning and 955.5 MB in the end (delta: -10.3 MB). Peak memory consumption was 134.4 MB. Max. memory is 11.5 GB. [2020-10-19 18:00:36,596 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:00:36,597 INFO L168 Benchmark]: CACSL2BoogieTranslator took 511.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -181.8 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:00:36,598 INFO L168 Benchmark]: Boogie Preprocessor took 52.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:00:36,599 INFO L168 Benchmark]: RCFGBuilder took 651.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:00:36,600 INFO L168 Benchmark]: TraceAbstraction took 1441.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 955.5 MB in the end (delta: 120.5 MB). Peak memory consumption was 120.5 MB. Max. memory is 11.5 GB. [2020-10-19 18:00:36,600 INFO L168 Benchmark]: Witness Printer took 61.42 ms. Allocated memory is still 1.2 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:00:36,603 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 511.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -181.8 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 52.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 651.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1441.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 955.5 MB in the end (delta: 120.5 MB). Peak memory consumption was 120.5 MB. Max. memory is 11.5 GB. * Witness Printer took 61.42 ms. Allocated memory is still 1.2 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 554]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L543] struct T* x = ((void *)0); [L544] struct T* y = ((void *)0); [L545] y = malloc(sizeof(*y)) [L546] intptr_t adressY = (intptr_t) y; VAL [adressY=-1, malloc(sizeof(*y))={-1:0}, x={0:0}, y={-1:0}] [L547] free(y) VAL [adressY=-1, malloc(sizeof(*y))={-1:0}, x={0:0}, y={-1:0}] [L547] free(y) VAL [adressY=-1, malloc(sizeof(*y))={-1:0}, x={0:0}, y={-1:0}] [L547] free(y) [L548] x = malloc(sizeof(*x)) [L549] intptr_t adressX = (intptr_t) x; VAL [adressX=-1, adressY=-1, malloc(sizeof(*x))={-1:0}, malloc(sizeof(*y))={-1:0}, x={-1:0}, y={-1:0}] [L550] COND TRUE adressX == adressY VAL [adressX=-1, adressY=-1, malloc(sizeof(*x))={-1:0}, malloc(sizeof(*y))={-1:0}, x={-1:0}, y={-1:0}] [L552] free(x) VAL [adressX=-1, adressY=-1, malloc(sizeof(*x))={-1:0}, malloc(sizeof(*y))={-1:0}, x={-1:0}, y={-1:0}] [L552] free(x) VAL [adressX=-1, adressY=-1, malloc(sizeof(*x))={-1:0}, malloc(sizeof(*y))={-1:0}, x={-1:0}, y={-1:0}] [L552] free(x) [L554] free(x) VAL [adressX=-1, adressY=-1, malloc(sizeof(*x))={-1:0}, malloc(sizeof(*y))={-1:0}, x={-1:0}, y={-1:0}] [L554] free(x) VAL [adressX=-1, adressY=-1, malloc(sizeof(*x))={-1:0}, malloc(sizeof(*y))={-1:0}, x={-1:0}, y={-1:0}] [L554] free(x) VAL [adressX=-1, adressY=-1, malloc(sizeof(*x))={-1:0}, malloc(sizeof(*y))={-1:0}, x={-1:0}, y={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 45 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 112 SDslu, 82 SDs, 0 SdLazy, 210 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 67 ConstructedInterpolants, 0 QuantifiedInterpolants, 2442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 proved your program to be incorrect! Received shutdown request...