./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/test-0158_1-3.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/list-ext-properties/test-0158_1-3.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 816de43cb6e982d6a1f876f61d346a36add599ac .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 18:05:46,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:05:46,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:05:46,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:05:46,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:05:46,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:05:46,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:05:46,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:05:46,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:05:46,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:05:46,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:05:46,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:05:46,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:05:46,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:05:46,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:05:46,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:05:46,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:05:46,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:05:46,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:05:46,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:05:46,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:05:46,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:05:46,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:05:46,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:05:46,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:05:46,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:05:46,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:05:46,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:05:46,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:05:46,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:05:46,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:05:46,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:05:46,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:05:46,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:05:46,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:05:46,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:05:46,610 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:05:46,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:05:46,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:05:46,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:05:46,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:05:46,615 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 18:05:46,640 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:05:46,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:05:46,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:05:46,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:05:46,643 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:05:46,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:05:46,644 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:05:46,644 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:05:46,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:05:46,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:05:46,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:05:46,645 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:05:46,646 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:05:46,646 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:05:46,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:05:46,646 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:05:46,647 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:05:46,647 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:05:46,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:05:46,648 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:05:46,648 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:05:46,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:05:46,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:05:46,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:05:46,649 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:05:46,649 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:05:46,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:05:46,650 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:05:46,650 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 -> 816de43cb6e982d6a1f876f61d346a36add599ac [2020-10-19 18:05:47,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:05:47,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:05:47,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:05:47,033 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:05:47,034 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:05:47,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/test-0158_1-3.i [2020-10-19 18:05:47,103 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/428df70fb/2b3baff3a3344e31a0b36f0327fff77d/FLAG1bd00f2d5 [2020-10-19 18:05:47,574 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:05:47,575 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/test-0158_1-3.i [2020-10-19 18:05:47,593 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/428df70fb/2b3baff3a3344e31a0b36f0327fff77d/FLAG1bd00f2d5 [2020-10-19 18:05:47,871 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/428df70fb/2b3baff3a3344e31a0b36f0327fff77d [2020-10-19 18:05:47,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:05:47,882 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:05:47,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:05:47,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:05:47,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:05:47,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:05:47" (1/1) ... [2020-10-19 18:05:47,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19f72651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:47, skipping insertion in model container [2020-10-19 18:05:47,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:05:47" (1/1) ... [2020-10-19 18:05:47,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:05:47,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:05:48,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:05:48,490 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:05:48,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:05:48,646 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:05:48,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:48 WrapperNode [2020-10-19 18:05:48,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:05:48,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:05:48,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:05:48,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:05:48,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:48" (1/1) ... [2020-10-19 18:05:48,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:48" (1/1) ... [2020-10-19 18:05:48,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:48" (1/1) ... [2020-10-19 18:05:48,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:48" (1/1) ... [2020-10-19 18:05:48,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:48" (1/1) ... [2020-10-19 18:05:48,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:48" (1/1) ... [2020-10-19 18:05:48,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:48" (1/1) ... [2020-10-19 18:05:48,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:05:48,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:05:48,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:05:48,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:05:48,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:48" (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 18:05:48,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:05:48,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:05:48,855 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:05:48,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 18:05:48,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 18:05:48,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 18:05:48,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 18:05:48,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 18:05:48,857 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:05:48,857 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:05:48,857 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:05:48,858 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-19 18:05:48,858 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-19 18:05:48,858 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:05:48,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:05:48,859 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:05:48,859 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:05:48,859 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:05:48,859 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:05:48,860 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:05:48,860 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:05:48,861 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:05:48,861 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:05:48,861 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:05:48,861 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:05:48,862 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:05:48,862 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:05:48,862 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:05:48,862 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:05:48,863 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:05:48,863 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:05:48,863 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 18:05:48,863 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 18:05:48,864 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 18:05:48,864 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 18:05:48,864 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 18:05:48,864 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:05:48,864 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:05:48,865 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:05:48,865 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:05:48,865 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:05:48,865 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:05:48,866 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:05:48,866 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:05:48,866 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:05:48,866 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:05:48,866 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:05:48,867 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:05:48,867 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:05:48,867 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:05:48,867 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:05:48,868 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:05:48,868 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:05:48,868 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:05:48,868 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:05:48,868 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:05:48,869 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:05:48,869 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:05:48,869 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:05:48,870 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:05:48,870 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:05:48,870 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:05:48,870 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:05:48,870 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:05:48,871 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:05:48,871 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:05:48,871 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:05:48,871 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:05:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:05:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:05:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:05:48,872 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:05:48,873 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:05:48,873 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:05:48,873 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:05:48,873 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:05:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:05:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:05:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:05:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:05:48,875 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:05:48,875 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:05:48,875 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:05:48,875 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:05:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:05:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:05:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:05:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:05:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:05:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:05:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:05:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:05:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:05:48,878 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:05:48,878 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:05:48,878 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:05:48,878 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:05:48,879 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:05:48,879 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:05:48,879 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:05:48,879 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:05:48,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:05:48,880 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:05:48,880 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:05:48,880 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:05:48,880 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:05:48,881 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:05:48,881 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:05:48,881 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:05:48,881 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:05:48,882 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:05:48,882 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:05:48,882 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:05:48,882 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:05:48,883 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:05:48,883 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:05:48,883 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:05:48,883 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:05:48,884 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:05:48,884 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:05:48,884 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:05:48,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:05:48,885 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:05:48,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:05:48,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:05:48,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:05:48,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:05:48,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:05:48,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:05:48,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:05:48,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:05:48,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:05:49,545 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:05:49,546 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-19 18:05:49,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:05:49 BoogieIcfgContainer [2020-10-19 18:05:49,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:05:49,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:05:49,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:05:49,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:05:49,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:05:47" (1/3) ... [2020-10-19 18:05:49,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c190d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:05:49, skipping insertion in model container [2020-10-19 18:05:49,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:48" (2/3) ... [2020-10-19 18:05:49,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c190d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:05:49, skipping insertion in model container [2020-10-19 18:05:49,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:05:49" (3/3) ... [2020-10-19 18:05:49,563 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158_1-3.i [2020-10-19 18:05:49,582 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:05:49,593 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 22 error locations. [2020-10-19 18:05:49,634 INFO L253 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2020-10-19 18:05:49,699 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:05:49,699 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:05:49,699 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:05:49,699 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:05:49,700 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:05:49,700 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:05:49,700 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:05:49,700 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:05:49,720 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-10-19 18:05:49,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:05:49,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:49,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:49,734 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr16ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:05:49,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:49,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1742406932, now seen corresponding path program 1 times [2020-10-19 18:05:49,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:49,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558703050] [2020-10-19 18:05:49,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:50,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:50,041 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 18:05:50,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558703050] [2020-10-19 18:05:50,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:50,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:05:50,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088816234] [2020-10-19 18:05:50,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:05:50,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:50,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:05:50,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:05:50,071 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-10-19 18:05:50,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:50,240 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-10-19 18:05:50,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:05:50,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-19 18:05:50,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:50,255 INFO L225 Difference]: With dead ends: 40 [2020-10-19 18:05:50,256 INFO L226 Difference]: Without dead ends: 37 [2020-10-19 18:05:50,258 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 18:05:50,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-19 18:05:50,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-19 18:05:50,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-19 18:05:50,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2020-10-19 18:05:50,303 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 7 [2020-10-19 18:05:50,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:50,304 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2020-10-19 18:05:50,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:05:50,304 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2020-10-19 18:05:50,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:05:50,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:50,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:50,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:05:50,306 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr16ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:05:50,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:50,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1742406931, now seen corresponding path program 1 times [2020-10-19 18:05:50,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:50,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405482154] [2020-10-19 18:05:50,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:50,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:50,410 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 18:05:50,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405482154] [2020-10-19 18:05:50,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:50,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:05:50,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748001053] [2020-10-19 18:05:50,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:05:50,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:50,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:05:50,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:05:50,414 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 4 states. [2020-10-19 18:05:50,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:50,510 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2020-10-19 18:05:50,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:05:50,510 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-19 18:05:50,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:50,512 INFO L225 Difference]: With dead ends: 30 [2020-10-19 18:05:50,512 INFO L226 Difference]: Without dead ends: 30 [2020-10-19 18:05:50,513 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 18:05:50,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-19 18:05:50,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-19 18:05:50,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-19 18:05:50,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-10-19 18:05:50,519 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 7 [2020-10-19 18:05:50,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:50,519 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-10-19 18:05:50,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:05:50,520 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-10-19 18:05:50,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 18:05:50,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:50,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:50,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:05:50,521 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr16ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:05:50,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:50,522 INFO L82 PathProgramCache]: Analyzing trace with hash -689389540, now seen corresponding path program 1 times [2020-10-19 18:05:50,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:50,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177082618] [2020-10-19 18:05:50,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:50,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:50,650 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 18:05:50,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177082618] [2020-10-19 18:05:50,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:50,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:05:50,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697421786] [2020-10-19 18:05:50,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:05:50,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:50,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:05:50,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:05:50,654 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 6 states. [2020-10-19 18:05:50,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:50,777 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2020-10-19 18:05:50,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:05:50,778 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-19 18:05:50,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:50,779 INFO L225 Difference]: With dead ends: 29 [2020-10-19 18:05:50,779 INFO L226 Difference]: Without dead ends: 29 [2020-10-19 18:05:50,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:05:50,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-19 18:05:50,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-19 18:05:50,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-19 18:05:50,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-10-19 18:05:50,785 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 15 [2020-10-19 18:05:50,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:50,785 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-10-19 18:05:50,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:05:50,786 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-10-19 18:05:50,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 18:05:50,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:50,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:50,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:05:50,788 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr16ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:05:50,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:50,788 INFO L82 PathProgramCache]: Analyzing trace with hash 103760825, now seen corresponding path program 1 times [2020-10-19 18:05:50,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:50,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537107258] [2020-10-19 18:05:50,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:50,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:50,918 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 18:05:50,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537107258] [2020-10-19 18:05:50,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:50,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:05:50,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773295297] [2020-10-19 18:05:50,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:05:50,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:50,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:05:50,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:05:50,921 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 6 states. [2020-10-19 18:05:51,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:51,052 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-10-19 18:05:51,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:05:51,052 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-19 18:05:51,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:51,054 INFO L225 Difference]: With dead ends: 28 [2020-10-19 18:05:51,054 INFO L226 Difference]: Without dead ends: 28 [2020-10-19 18:05:51,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:05:51,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-19 18:05:51,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-19 18:05:51,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-19 18:05:51,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-10-19 18:05:51,059 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 16 [2020-10-19 18:05:51,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:51,060 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-10-19 18:05:51,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:05:51,060 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-10-19 18:05:51,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 18:05:51,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:51,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:51,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:05:51,062 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr16ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:05:51,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:51,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1078381634, now seen corresponding path program 1 times [2020-10-19 18:05:51,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:51,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718850419] [2020-10-19 18:05:51,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:51,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:51,163 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 18:05:51,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718850419] [2020-10-19 18:05:51,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:51,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:05:51,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640765654] [2020-10-19 18:05:51,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:05:51,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:51,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:05:51,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:05:51,166 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 6 states. [2020-10-19 18:05:51,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:51,278 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-10-19 18:05:51,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:05:51,278 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-19 18:05:51,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:51,279 INFO L225 Difference]: With dead ends: 27 [2020-10-19 18:05:51,280 INFO L226 Difference]: Without dead ends: 27 [2020-10-19 18:05:51,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:05:51,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-19 18:05:51,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-19 18:05:51,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-19 18:05:51,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-10-19 18:05:51,285 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 17 [2020-10-19 18:05:51,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:51,286 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-10-19 18:05:51,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:05:51,286 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-10-19 18:05:51,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 18:05:51,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:51,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:51,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:05:51,288 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr16ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:05:51,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:51,288 INFO L82 PathProgramCache]: Analyzing trace with hash 929907803, now seen corresponding path program 1 times [2020-10-19 18:05:51,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:51,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990389663] [2020-10-19 18:05:51,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:51,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:51,391 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 18:05:51,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990389663] [2020-10-19 18:05:51,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:51,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:05:51,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170657480] [2020-10-19 18:05:51,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:05:51,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:51,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:05:51,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:05:51,395 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 7 states. [2020-10-19 18:05:51,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:51,530 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-10-19 18:05:51,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:05:51,531 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-10-19 18:05:51,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:51,532 INFO L225 Difference]: With dead ends: 26 [2020-10-19 18:05:51,533 INFO L226 Difference]: Without dead ends: 26 [2020-10-19 18:05:51,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:05:51,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-19 18:05:51,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-19 18:05:51,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-19 18:05:51,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-10-19 18:05:51,538 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 18 [2020-10-19 18:05:51,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:51,539 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-10-19 18:05:51,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:05:51,540 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-10-19 18:05:51,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 18:05:51,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:51,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:51,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 18:05:51,542 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr16ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:05:51,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:51,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1237629088, now seen corresponding path program 1 times [2020-10-19 18:05:51,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:51,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992390473] [2020-10-19 18:05:51,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:51,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:51,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:51,650 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 18:05:51,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992390473] [2020-10-19 18:05:51,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:51,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:05:51,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471411520] [2020-10-19 18:05:51,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:05:51,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:51,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:05:51,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:05:51,654 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 7 states. [2020-10-19 18:05:51,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:51,789 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-10-19 18:05:51,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:05:51,790 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-19 18:05:51,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:51,791 INFO L225 Difference]: With dead ends: 25 [2020-10-19 18:05:51,791 INFO L226 Difference]: Without dead ends: 25 [2020-10-19 18:05:51,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:05:51,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-19 18:05:51,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-19 18:05:51,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-19 18:05:51,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-10-19 18:05:51,796 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 19 [2020-10-19 18:05:51,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:51,797 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-10-19 18:05:51,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:05:51,797 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-10-19 18:05:51,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 18:05:51,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:51,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:51,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 18:05:51,799 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr16ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:05:51,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:51,800 INFO L82 PathProgramCache]: Analyzing trace with hash 288204029, now seen corresponding path program 1 times [2020-10-19 18:05:51,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:51,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905829809] [2020-10-19 18:05:51,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:51,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:05:51,823 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:05:51,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:05:51,843 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:05:51,877 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:05:51,878 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:05:51,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 18:05:51,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:05:51 BoogieIcfgContainer [2020-10-19 18:05:51,954 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:05:51,954 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:05:51,954 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:05:51,955 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:05:51,955 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:05:49" (3/4) ... [2020-10-19 18:05:51,959 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 18:05:52,011 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:05:52,011 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:05:52,014 INFO L168 Benchmark]: Toolchain (without parser) took 4136.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 943.9 MB in the beginning and 848.0 MB in the end (delta: 95.8 MB). Peak memory consumption was 222.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:05:52,015 INFO L168 Benchmark]: CDTParser took 0.44 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 18:05:52,016 INFO L168 Benchmark]: CACSL2BoogieTranslator took 764.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 943.9 MB in the beginning and 1.1 GB in the end (delta: -157.8 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:05:52,016 INFO L168 Benchmark]: Boogie Preprocessor took 116.81 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:05:52,017 INFO L168 Benchmark]: RCFGBuilder took 781.05 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: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:05:52,018 INFO L168 Benchmark]: TraceAbstraction took 2403.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 848.0 MB in the end (delta: 202.3 MB). Peak memory consumption was 202.3 MB. Max. memory is 11.5 GB. [2020-10-19 18:05:52,018 INFO L168 Benchmark]: Witness Printer took 57.08 ms. Allocated memory is still 1.2 GB. Free memory is still 848.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:05:52,022 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 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 764.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 943.9 MB in the beginning and 1.1 GB in the end (delta: -157.8 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 116.81 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 781.05 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: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2403.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 848.0 MB in the end (delta: 202.3 MB). Peak memory consumption was 202.3 MB. Max. memory is 11.5 GB. * Witness Printer took 57.08 ms. Allocated memory is still 1.2 GB. Free memory is still 848.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 545]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L526-L533] union { void *p0; struct { char c[2]; int p1; int p2; } str; } data; [L534] data.p0 = malloc(37U) VAL [data={3:0}, malloc(37U)={-1:0}] [L535] EXPR data.p0 VAL [data={3:0}, data.p0={-1:0}, malloc(37U)={-1:0}] [L535] void *ptr = data.p0; [L536] COND FALSE !(__VERIFIER_nondet_int()) [L539] data.str.p2 = 30 VAL [data={3:0}, malloc(37U)={-1:0}, ptr={-1:0}] [L541] EXPR data.str.p2 VAL [data={3:0}, data.str.p2=30, malloc(37U)={-1:0}, ptr={-1:0}] [L541] COND FALSE !(25 > data.str.p2) [L544] EXPR data.p0 VAL [data={3:0}, data.p0={-1:0}, malloc(37U)={-1:0}, ptr={-1:0}] [L544] free(data.p0) VAL [data={3:0}, data.p0={-1:0}, malloc(37U)={-1:0}, ptr={-1:0}] [L544] free(data.p0) VAL [data={3:0}, data.p0={-1:0}, malloc(37U)={-1:0}, ptr={-1:0}] [L544] free(data.p0) [L545] free(ptr) VAL [data={3:0}, malloc(37U)={-1:0}, ptr={-1:0}] [L545] free(ptr) VAL [data={3:0}, malloc(37U)={-1:0}, ptr={-1:0}] [L545] free(ptr) VAL [data={3:0}, malloc(37U)={-1:0}, ptr={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 67 locations, 22 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 121 SDtfs, 201 SDslu, 159 SDs, 0 SdLazy, 374 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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, 0.6s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 7942 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...