./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/list-ext3-properties/sll_length_check-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) 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-ext3-properties/sll_length_check-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3589167bbf5d7f5cd80f4f92aa27b7dbe19a0217 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:26:37,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:26:37,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:26:37,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:26:37,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:26:37,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:26:37,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:26:37,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:26:37,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:26:37,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:26:37,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:26:37,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:26:37,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:26:37,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:26:37,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:26:37,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:26:37,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:26:37,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:26:37,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:26:37,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:26:37,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:26:37,545 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:26:37,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:26:37,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:26:37,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:26:37,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:26:37,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:26:37,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:26:37,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:26:37,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:26:37,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:26:37,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:26:37,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:26:37,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:26:37,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:26:37,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:26:37,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:26:37,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:26:37,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:26:37,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:26:37,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:26:37,583 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2020-10-19 18:26:37,622 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:26:37,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:26:37,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:26:37,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:26:37,625 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:26:37,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:26:37,626 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:26:37,626 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:26:37,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:26:37,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:26:37,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:26:37,627 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:26:37,627 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:26:37,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:26:37,628 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:26:37,628 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:26:37,628 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:26:37,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:26:37,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:26:37,629 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:26:37,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:26:37,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:26:37,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:26:37,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:26:37,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:26:37,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:26:37,631 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:26:37,631 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-memcleanup) ) 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 -> 3589167bbf5d7f5cd80f4f92aa27b7dbe19a0217 [2020-10-19 18:26:37,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:26:37,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:26:37,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:26:37,953 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:26:37,954 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:26:37,955 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext3-properties/sll_length_check-1.i [2020-10-19 18:26:38,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86ae8f54a/9c2babda195c439eb93cbfe03fe6202a/FLAG405fc3d07 [2020-10-19 18:26:38,613 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:26:38,613 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_length_check-1.i [2020-10-19 18:26:38,630 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86ae8f54a/9c2babda195c439eb93cbfe03fe6202a/FLAG405fc3d07 [2020-10-19 18:26:38,956 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86ae8f54a/9c2babda195c439eb93cbfe03fe6202a [2020-10-19 18:26:38,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:26:38,967 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:26:38,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:26:38,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:26:38,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:26:38,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:26:38" (1/1) ... [2020-10-19 18:26:38,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10c1a09e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:38, skipping insertion in model container [2020-10-19 18:26:38,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:26:38" (1/1) ... [2020-10-19 18:26:38,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:26:39,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:26:39,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:26:39,502 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:26:39,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:26:39,630 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:26:39,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:39 WrapperNode [2020-10-19 18:26:39,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:26:39,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:26:39,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:26:39,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:26:39,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:39" (1/1) ... [2020-10-19 18:26:39,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:39" (1/1) ... [2020-10-19 18:26:39,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:39" (1/1) ... [2020-10-19 18:26:39,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:39" (1/1) ... [2020-10-19 18:26:39,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:39" (1/1) ... [2020-10-19 18:26:39,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:39" (1/1) ... [2020-10-19 18:26:39,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:39" (1/1) ... [2020-10-19 18:26:39,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:26:39,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:26:39,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:26:39,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:26:39,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:39" (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 18:26:39,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:26:39,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:26:39,790 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:26:39,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 18:26:39,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 18:26:39,791 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-19 18:26:39,791 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-19 18:26:39,791 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-10-19 18:26:39,791 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-10-19 18:26:39,791 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:26:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:26:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:26:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-19 18:26:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-19 18:26:39,793 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:26:39,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:26:39,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:26:39,793 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 18:26:39,794 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 18:26:39,794 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:26:39,794 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:26:39,794 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:26:39,795 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:26:39,795 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:26:39,795 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:26:39,796 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:26:39,796 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:26:39,796 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:26:39,796 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:26:39,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:26:39,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:26:39,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:26:39,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:26:39,798 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:26:39,798 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:26:39,798 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:26:39,798 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:26:39,799 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:26:39,799 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:26:39,799 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:26:39,799 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:26:39,799 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:26:39,799 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:26:39,800 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:26:39,800 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:26:39,800 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:26:39,800 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:26:39,800 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:26:39,801 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:26:39,801 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:26:39,801 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:26:39,801 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:26:39,802 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:26:39,802 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:26:39,802 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:26:39,802 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:26:39,802 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:26:39,803 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:26:39,803 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:26:39,803 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:26:39,803 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:26:39,804 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:26:39,804 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:26:39,804 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:26:39,804 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:26:39,804 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:26:39,805 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:26:39,805 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:26:39,805 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:26:39,805 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:26:39,805 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:26:39,806 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:26:39,806 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:26:39,806 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-19 18:26:39,806 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:26:39,807 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:26:39,807 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:26:39,807 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:26:39,807 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:26:39,807 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:26:39,808 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:26:39,808 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:26:39,808 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:26:39,808 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:26:39,809 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:26:39,809 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:26:39,809 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:26:39,809 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:26:39,809 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:26:39,810 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:26:39,810 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:26:39,810 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:26:39,810 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:26:39,810 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:26:39,811 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:26:39,811 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:26:39,811 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:26:39,811 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:26:39,811 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:26:39,811 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:26:39,812 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:26:39,812 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:26:39,812 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:26:39,812 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:26:39,812 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:26:39,813 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:26:39,813 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:26:39,813 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:26:39,813 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:26:39,813 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:26:39,814 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:26:39,814 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:26:39,814 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:26:39,814 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:26:39,814 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:26:39,815 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:26:39,815 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:26:39,815 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:26:39,815 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:26:39,816 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:26:39,816 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:26:39,816 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-19 18:26:39,816 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-19 18:26:39,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:26:39,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:26:39,817 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-10-19 18:26:39,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:26:39,817 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-10-19 18:26:39,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:26:39,818 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:26:39,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:26:39,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:26:39,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:26:39,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:26:39,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:26:40,198 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-19 18:26:40,374 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:26:40,374 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-19 18:26:40,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:26:40 BoogieIcfgContainer [2020-10-19 18:26:40,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:26:40,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:26:40,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:26:40,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:26:40,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:26:38" (1/3) ... [2020-10-19 18:26:40,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a884337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:26:40, skipping insertion in model container [2020-10-19 18:26:40,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:39" (2/3) ... [2020-10-19 18:26:40,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a884337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:26:40, skipping insertion in model container [2020-10-19 18:26:40,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:26:40" (3/3) ... [2020-10-19 18:26:40,385 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_length_check-1.i [2020-10-19 18:26:40,397 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:26:40,405 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-10-19 18:26:40,417 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-10-19 18:26:40,439 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:26:40,439 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:26:40,439 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:26:40,439 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:26:40,440 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:26:40,440 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:26:40,440 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:26:40,440 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:26:40,457 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-10-19 18:26:40,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-19 18:26:40,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:40,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:40,467 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, sll_lengthErr1REQUIRES_VIOLATION, sll_lengthErr0REQUIRES_VIOLATION]=== [2020-10-19 18:26:40,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:40,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1778924751, now seen corresponding path program 1 times [2020-10-19 18:26:40,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:40,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214080986] [2020-10-19 18:26:40,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:40,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:40,694 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 18:26:40,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214080986] [2020-10-19 18:26:40,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:40,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:26:40,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187297392] [2020-10-19 18:26:40,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:26:40,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:40,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:26:40,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:26:40,722 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 3 states. [2020-10-19 18:26:40,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:40,925 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2020-10-19 18:26:40,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:26:40,927 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-19 18:26:40,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:40,940 INFO L225 Difference]: With dead ends: 87 [2020-10-19 18:26:40,940 INFO L226 Difference]: Without dead ends: 78 [2020-10-19 18:26:40,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:26:40,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-19 18:26:40,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2020-10-19 18:26:40,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-19 18:26:40,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2020-10-19 18:26:41,000 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 12 [2020-10-19 18:26:41,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:41,000 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2020-10-19 18:26:41,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:26:41,001 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2020-10-19 18:26:41,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 18:26:41,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:41,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:41,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:26:41,002 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, sll_lengthErr1REQUIRES_VIOLATION, sll_lengthErr0REQUIRES_VIOLATION]=== [2020-10-19 18:26:41,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:41,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1591559482, now seen corresponding path program 1 times [2020-10-19 18:26:41,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:41,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32832865] [2020-10-19 18:26:41,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:41,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:41,106 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 18:26:41,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32832865] [2020-10-19 18:26:41,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:41,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:26:41,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949801357] [2020-10-19 18:26:41,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:26:41,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:41,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:26:41,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:26:41,110 INFO L87 Difference]: Start difference. First operand 67 states and 76 transitions. Second operand 5 states. [2020-10-19 18:26:41,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:41,441 INFO L93 Difference]: Finished difference Result 97 states and 115 transitions. [2020-10-19 18:26:41,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:26:41,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-19 18:26:41,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:41,444 INFO L225 Difference]: With dead ends: 97 [2020-10-19 18:26:41,444 INFO L226 Difference]: Without dead ends: 97 [2020-10-19 18:26:41,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:26:41,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-19 18:26:41,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 69. [2020-10-19 18:26:41,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-19 18:26:41,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2020-10-19 18:26:41,459 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 14 [2020-10-19 18:26:41,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:41,460 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2020-10-19 18:26:41,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:26:41,460 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2020-10-19 18:26:41,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 18:26:41,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:41,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:41,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:26:41,462 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, sll_lengthErr1REQUIRES_VIOLATION, sll_lengthErr0REQUIRES_VIOLATION]=== [2020-10-19 18:26:41,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:41,462 INFO L82 PathProgramCache]: Analyzing trace with hash -183447880, now seen corresponding path program 1 times [2020-10-19 18:26:41,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:41,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075698449] [2020-10-19 18:26:41,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:41,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:41,551 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 18:26:41,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075698449] [2020-10-19 18:26:41,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:41,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:26:41,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328983288] [2020-10-19 18:26:41,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:26:41,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:41,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:26:41,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:26:41,554 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 4 states. [2020-10-19 18:26:41,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:41,727 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2020-10-19 18:26:41,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:26:41,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-19 18:26:41,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:41,730 INFO L225 Difference]: With dead ends: 79 [2020-10-19 18:26:41,730 INFO L226 Difference]: Without dead ends: 79 [2020-10-19 18:26:41,730 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 18:26:41,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-19 18:26:41,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2020-10-19 18:26:41,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-19 18:26:41,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2020-10-19 18:26:41,740 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 14 [2020-10-19 18:26:41,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:41,741 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2020-10-19 18:26:41,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:26:41,742 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2020-10-19 18:26:41,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 18:26:41,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:41,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:41,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:26:41,744 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, sll_lengthErr1REQUIRES_VIOLATION, sll_lengthErr0REQUIRES_VIOLATION]=== [2020-10-19 18:26:41,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:41,744 INFO L82 PathProgramCache]: Analyzing trace with hash -183447879, now seen corresponding path program 1 times [2020-10-19 18:26:41,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:41,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258833359] [2020-10-19 18:26:41,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:41,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:41,826 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 18:26:41,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258833359] [2020-10-19 18:26:41,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:41,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:26:41,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542122978] [2020-10-19 18:26:41,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:26:41,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:41,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:26:41,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:26:41,830 INFO L87 Difference]: Start difference. First operand 68 states and 77 transitions. Second operand 4 states. [2020-10-19 18:26:42,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:42,012 INFO L93 Difference]: Finished difference Result 78 states and 87 transitions. [2020-10-19 18:26:42,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:26:42,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-19 18:26:42,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:42,014 INFO L225 Difference]: With dead ends: 78 [2020-10-19 18:26:42,014 INFO L226 Difference]: Without dead ends: 78 [2020-10-19 18:26:42,015 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 18:26:42,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-19 18:26:42,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2020-10-19 18:26:42,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-19 18:26:42,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2020-10-19 18:26:42,024 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 14 [2020-10-19 18:26:42,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:42,024 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2020-10-19 18:26:42,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:26:42,025 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2020-10-19 18:26:42,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 18:26:42,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:42,026 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 18:26:42,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:26:42,027 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, sll_lengthErr1REQUIRES_VIOLATION, sll_lengthErr0REQUIRES_VIOLATION]=== [2020-10-19 18:26:42,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:42,027 INFO L82 PathProgramCache]: Analyzing trace with hash 116018533, now seen corresponding path program 1 times [2020-10-19 18:26:42,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:42,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362031332] [2020-10-19 18:26:42,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:42,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:42,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 18:26:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:42,251 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 18:26:42,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362031332] [2020-10-19 18:26:42,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:42,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-19 18:26:42,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410664121] [2020-10-19 18:26:42,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 18:26:42,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:42,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 18:26:42,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:26:42,257 INFO L87 Difference]: Start difference. First operand 67 states and 76 transitions. Second operand 10 states. [2020-10-19 18:26:42,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:42,980 INFO L93 Difference]: Finished difference Result 89 states and 96 transitions. [2020-10-19 18:26:42,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 18:26:42,984 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-19 18:26:42,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:42,986 INFO L225 Difference]: With dead ends: 89 [2020-10-19 18:26:42,986 INFO L226 Difference]: Without dead ends: 89 [2020-10-19 18:26:42,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-19 18:26:42,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-19 18:26:42,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2020-10-19 18:26:42,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-19 18:26:42,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2020-10-19 18:26:42,997 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 20 [2020-10-19 18:26:42,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:42,998 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2020-10-19 18:26:42,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 18:26:42,998 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2020-10-19 18:26:42,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 18:26:42,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:42,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:43,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:26:43,000 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, sll_lengthErr1REQUIRES_VIOLATION, sll_lengthErr0REQUIRES_VIOLATION]=== [2020-10-19 18:26:43,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:43,001 INFO L82 PathProgramCache]: Analyzing trace with hash -498946436, now seen corresponding path program 1 times [2020-10-19 18:26:43,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:43,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907894645] [2020-10-19 18:26:43,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:43,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:43,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:43,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 18:26:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:43,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:43,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907894645] [2020-10-19 18:26:43,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:43,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-19 18:26:43,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837579224] [2020-10-19 18:26:43,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 18:26:43,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:43,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 18:26:43,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:26:43,138 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand 11 states. [2020-10-19 18:26:43,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:43,720 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2020-10-19 18:26:43,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:26:43,723 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2020-10-19 18:26:43,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:43,724 INFO L225 Difference]: With dead ends: 95 [2020-10-19 18:26:43,725 INFO L226 Difference]: Without dead ends: 95 [2020-10-19 18:26:43,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-10-19 18:26:43,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-19 18:26:43,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 74. [2020-10-19 18:26:43,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-19 18:26:43,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions. [2020-10-19 18:26:43,739 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 24 [2020-10-19 18:26:43,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:43,739 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 84 transitions. [2020-10-19 18:26:43,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 18:26:43,740 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions. [2020-10-19 18:26:43,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 18:26:43,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:43,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:43,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 18:26:43,742 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, sll_lengthErr1REQUIRES_VIOLATION, sll_lengthErr0REQUIRES_VIOLATION]=== [2020-10-19 18:26:43,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:43,743 INFO L82 PathProgramCache]: Analyzing trace with hash -498946435, now seen corresponding path program 1 times [2020-10-19 18:26:43,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:43,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250448152] [2020-10-19 18:26:43,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:43,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:43,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 18:26:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:43,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:43,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250448152] [2020-10-19 18:26:43,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485206076] [2020-10-19 18:26:43,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:26:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:44,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:26:44,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:26:44,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:44,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:26:44,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 10 [2020-10-19 18:26:44,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104355282] [2020-10-19 18:26:44,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 18:26:44,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:44,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 18:26:44,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:26:44,096 INFO L87 Difference]: Start difference. First operand 74 states and 84 transitions. Second operand 10 states. [2020-10-19 18:26:44,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:44,539 INFO L93 Difference]: Finished difference Result 95 states and 107 transitions. [2020-10-19 18:26:44,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 18:26:44,545 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-19 18:26:44,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:44,546 INFO L225 Difference]: With dead ends: 95 [2020-10-19 18:26:44,546 INFO L226 Difference]: Without dead ends: 89 [2020-10-19 18:26:44,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-10-19 18:26:44,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-19 18:26:44,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 62. [2020-10-19 18:26:44,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-19 18:26:44,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2020-10-19 18:26:44,553 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 24 [2020-10-19 18:26:44,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:44,553 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2020-10-19 18:26:44,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 18:26:44,553 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2020-10-19 18:26:44,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 18:26:44,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:44,554 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:44,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-10-19 18:26:44,768 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, sll_lengthErr1REQUIRES_VIOLATION, sll_lengthErr0REQUIRES_VIOLATION]=== [2020-10-19 18:26:44,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:44,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1446597612, now seen corresponding path program 2 times [2020-10-19 18:26:44,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:44,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583799756] [2020-10-19 18:26:44,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:44,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:44,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 18:26:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:44,901 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:44,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583799756] [2020-10-19 18:26:44,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905932105] [2020-10-19 18:26:44,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:26:45,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 18:26:45,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:26:45,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 18:26:45,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:26:45,097 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:45,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:26:45,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 11 [2020-10-19 18:26:45,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140270749] [2020-10-19 18:26:45,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 18:26:45,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:45,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 18:26:45,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:26:45,104 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand 11 states. [2020-10-19 18:26:45,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:45,523 INFO L93 Difference]: Finished difference Result 96 states and 108 transitions. [2020-10-19 18:26:45,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 18:26:45,524 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-10-19 18:26:45,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:45,526 INFO L225 Difference]: With dead ends: 96 [2020-10-19 18:26:45,526 INFO L226 Difference]: Without dead ends: 93 [2020-10-19 18:26:45,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-19 18:26:45,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-19 18:26:45,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 66. [2020-10-19 18:26:45,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-19 18:26:45,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2020-10-19 18:26:45,532 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 28 [2020-10-19 18:26:45,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:45,532 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2020-10-19 18:26:45,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 18:26:45,532 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2020-10-19 18:26:45,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-19 18:26:45,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:45,533 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:45,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:26:45,747 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, sll_lengthErr1REQUIRES_VIOLATION, sll_lengthErr0REQUIRES_VIOLATION]=== [2020-10-19 18:26:45,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:45,748 INFO L82 PathProgramCache]: Analyzing trace with hash -313260501, now seen corresponding path program 3 times [2020-10-19 18:26:45,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:45,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113901335] [2020-10-19 18:26:45,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:45,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:45,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 18:26:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:45,951 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-19 18:26:45,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113901335] [2020-10-19 18:26:45,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:45,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-19 18:26:45,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252659503] [2020-10-19 18:26:45,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 18:26:45,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:45,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 18:26:45,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:26:45,953 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand 11 states. [2020-10-19 18:26:46,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:46,450 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2020-10-19 18:26:46,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:26:46,451 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-19 18:26:46,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:46,453 INFO L225 Difference]: With dead ends: 83 [2020-10-19 18:26:46,453 INFO L226 Difference]: Without dead ends: 83 [2020-10-19 18:26:46,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-10-19 18:26:46,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-19 18:26:46,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 66. [2020-10-19 18:26:46,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-19 18:26:46,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2020-10-19 18:26:46,459 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 32 [2020-10-19 18:26:46,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:46,459 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2020-10-19 18:26:46,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 18:26:46,460 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2020-10-19 18:26:46,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-19 18:26:46,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:46,461 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:46,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 18:26:46,461 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, sll_lengthErr1REQUIRES_VIOLATION, sll_lengthErr0REQUIRES_VIOLATION]=== [2020-10-19 18:26:46,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:46,461 INFO L82 PathProgramCache]: Analyzing trace with hash 620341838, now seen corresponding path program 1 times [2020-10-19 18:26:46,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:46,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530404696] [2020-10-19 18:26:46,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:46,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:46,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 18:26:46,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:46,718 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-19 18:26:46,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530404696] [2020-10-19 18:26:46,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118795258] [2020-10-19 18:26:46,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:26:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:46,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 44 conjunts are in the unsatisfiable core [2020-10-19 18:26:46,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:26:46,876 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:26:46,876 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:46,883 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:46,883 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:46,884 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:26:46,916 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:46,916 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-10-19 18:26:46,918 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:46,933 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-10-19 18:26:46,934 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:46,934 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:14 [2020-10-19 18:26:46,966 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:26:46,966 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:46,975 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:46,977 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:46,977 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:21 [2020-10-19 18:26:47,441 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-19 18:26:47,443 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-10-19 18:26:47,443 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:47,464 INFO L625 ElimStorePlain]: treesize reduction 3, result has 87.0 percent of original size [2020-10-19 18:26:47,472 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:26:47,472 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:34, output treesize:11 [2020-10-19 18:26:47,490 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 18:26:47,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:26:47,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 23 [2020-10-19 18:26:47,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230243907] [2020-10-19 18:26:47,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-19 18:26:47,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:47,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-19 18:26:47,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2020-10-19 18:26:47,495 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand 24 states. [2020-10-19 18:26:48,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:48,867 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions. [2020-10-19 18:26:48,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-19 18:26:48,868 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 35 [2020-10-19 18:26:48,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:48,869 INFO L225 Difference]: With dead ends: 92 [2020-10-19 18:26:48,869 INFO L226 Difference]: Without dead ends: 92 [2020-10-19 18:26:48,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=161, Invalid=1099, Unknown=0, NotChecked=0, Total=1260 [2020-10-19 18:26:48,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-19 18:26:48,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 69. [2020-10-19 18:26:48,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-19 18:26:48,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2020-10-19 18:26:48,885 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 35 [2020-10-19 18:26:48,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:48,885 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2020-10-19 18:26:48,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-19 18:26:48,886 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2020-10-19 18:26:48,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-19 18:26:48,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:48,889 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:49,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-19 18:26:49,104 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, sll_lengthErr1REQUIRES_VIOLATION, sll_lengthErr0REQUIRES_VIOLATION]=== [2020-10-19 18:26:49,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:49,104 INFO L82 PathProgramCache]: Analyzing trace with hash 620341839, now seen corresponding path program 1 times [2020-10-19 18:26:49,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:49,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452031636] [2020-10-19 18:26:49,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:49,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:49,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 18:26:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:49,409 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 18:26:49,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452031636] [2020-10-19 18:26:49,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674985776] [2020-10-19 18:26:49,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:26:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:49,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 47 conjunts are in the unsatisfiable core [2020-10-19 18:26:49,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:26:49,540 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:26:49,540 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:49,545 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:49,545 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:49,545 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:26:49,636 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:49,636 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-10-19 18:26:49,637 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:49,658 INFO L625 ElimStorePlain]: treesize reduction 14, result has 54.8 percent of original size [2020-10-19 18:26:49,659 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:49,659 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:17 [2020-10-19 18:26:49,704 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:26:49,704 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:49,724 INFO L625 ElimStorePlain]: treesize reduction 7, result has 83.3 percent of original size [2020-10-19 18:26:49,729 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:26:49,729 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:49,739 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:49,740 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:49,740 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:46, output treesize:28 [2020-10-19 18:26:50,177 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-19 18:26:50,178 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-10-19 18:26:50,179 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:50,203 INFO L625 ElimStorePlain]: treesize reduction 3, result has 91.9 percent of original size [2020-10-19 18:26:50,207 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-19 18:26:50,208 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-10-19 18:26:50,209 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:50,219 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:50,223 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:26:50,224 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:48, output treesize:14 [2020-10-19 18:26:50,327 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 18:26:50,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:26:50,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 28 [2020-10-19 18:26:50,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55224667] [2020-10-19 18:26:50,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-19 18:26:50,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:50,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-19 18:26:50,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=744, Unknown=0, NotChecked=0, Total=812 [2020-10-19 18:26:50,330 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand 29 states. [2020-10-19 18:26:51,770 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2020-10-19 18:26:52,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:52,414 INFO L93 Difference]: Finished difference Result 89 states and 96 transitions. [2020-10-19 18:26:52,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-19 18:26:52,415 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 35 [2020-10-19 18:26:52,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:52,417 INFO L225 Difference]: With dead ends: 89 [2020-10-19 18:26:52,417 INFO L226 Difference]: Without dead ends: 89 [2020-10-19 18:26:52,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=206, Invalid=1516, Unknown=0, NotChecked=0, Total=1722 [2020-10-19 18:26:52,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-19 18:26:52,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 69. [2020-10-19 18:26:52,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-19 18:26:52,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2020-10-19 18:26:52,423 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 35 [2020-10-19 18:26:52,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:52,423 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2020-10-19 18:26:52,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-19 18:26:52,424 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2020-10-19 18:26:52,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-19 18:26:52,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:52,425 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:52,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:26:52,636 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, sll_lengthErr1REQUIRES_VIOLATION, sll_lengthErr0REQUIRES_VIOLATION]=== [2020-10-19 18:26:52,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:52,637 INFO L82 PathProgramCache]: Analyzing trace with hash -640556118, now seen corresponding path program 2 times [2020-10-19 18:26:52,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:52,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929718665] [2020-10-19 18:26:52,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:52,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:52,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 18:26:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:53,138 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:53,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929718665] [2020-10-19 18:26:53,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462306224] [2020-10-19 18:26:53,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:26:53,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 18:26:53,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:26:53,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 71 conjunts are in the unsatisfiable core [2020-10-19 18:26:53,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:26:53,300 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:26:53,301 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:53,305 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:53,306 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:53,306 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:26:53,346 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:53,347 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-10-19 18:26:53,348 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:53,364 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-10-19 18:26:53,364 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:53,364 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:14 [2020-10-19 18:26:53,406 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:26:53,407 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:53,416 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:53,416 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:53,417 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:21 [2020-10-19 18:26:53,562 INFO L350 Elim1Store]: treesize reduction 12, result has 86.2 percent of original size [2020-10-19 18:26:53,563 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 89 [2020-10-19 18:26:53,564 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:53,611 INFO L625 ElimStorePlain]: treesize reduction 40, result has 52.4 percent of original size [2020-10-19 18:26:53,613 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:26:53,613 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:44 [2020-10-19 18:26:53,691 INFO L441 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_10|], 2=[|v_#memory_$Pointer$.base_12|]} [2020-10-19 18:26:53,696 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:26:53,696 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:53,725 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:53,731 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2020-10-19 18:26:53,732 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:53,780 INFO L625 ElimStorePlain]: treesize reduction 4, result has 93.4 percent of original size [2020-10-19 18:26:53,783 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:26:53,783 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:69, output treesize:59 [2020-10-19 18:26:54,392 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-19 18:26:54,393 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-10-19 18:26:54,394 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:54,436 INFO L625 ElimStorePlain]: treesize reduction 3, result has 95.6 percent of original size [2020-10-19 18:26:54,445 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-19 18:26:54,445 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:79, output treesize:65 [2020-10-19 18:26:54,708 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-19 18:26:54,711 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-19 18:26:54,712 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-19 18:26:54,723 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:54,724 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 55 treesize of output 48 [2020-10-19 18:26:54,725 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:26:54,729 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:26:54,730 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:26:54,772 INFO L625 ElimStorePlain]: treesize reduction 7, result has 85.7 percent of original size [2020-10-19 18:26:54,777 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-19 18:26:54,777 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:81, output treesize:24 [2020-10-19 18:26:54,955 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:54,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:26:54,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 35 [2020-10-19 18:26:54,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785026731] [2020-10-19 18:26:54,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-19 18:26:54,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:54,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-19 18:26:54,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1164, Unknown=0, NotChecked=0, Total=1260 [2020-10-19 18:26:54,965 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 36 states. [2020-10-19 18:26:56,366 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-19 18:26:58,832 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 98 [2020-10-19 18:27:01,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:27:01,137 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2020-10-19 18:27:01,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-19 18:27:01,138 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 38 [2020-10-19 18:27:01,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:27:01,142 INFO L225 Difference]: With dead ends: 101 [2020-10-19 18:27:01,142 INFO L226 Difference]: Without dead ends: 101 [2020-10-19 18:27:01,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=318, Invalid=2543, Unknown=1, NotChecked=0, Total=2862 [2020-10-19 18:27:01,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-19 18:27:01,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 72. [2020-10-19 18:27:01,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-19 18:27:01,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2020-10-19 18:27:01,148 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 38 [2020-10-19 18:27:01,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:27:01,150 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2020-10-19 18:27:01,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-19 18:27:01,150 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2020-10-19 18:27:01,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-19 18:27:01,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:27:01,155 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:27:01,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-19 18:27:01,357 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, sll_lengthErr1REQUIRES_VIOLATION, sll_lengthErr0REQUIRES_VIOLATION]=== [2020-10-19 18:27:01,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:27:01,358 INFO L82 PathProgramCache]: Analyzing trace with hash -640556117, now seen corresponding path program 2 times [2020-10-19 18:27:01,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:27:01,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189233277] [2020-10-19 18:27:01,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:27:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:01,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:27:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:01,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 18:27:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:02,001 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:27:02,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189233277] [2020-10-19 18:27:02,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352243002] [2020-10-19 18:27:02,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:27:02,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 18:27:02,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:27:02,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 78 conjunts are in the unsatisfiable core [2020-10-19 18:27:02,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:27:02,117 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:27:02,118 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:02,124 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:02,127 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:27:02,128 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:02,136 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:02,137 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:27:02,137 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2020-10-19 18:27:02,259 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:02,259 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-19 18:27:02,260 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:02,268 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:02,272 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2020-10-19 18:27:02,272 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:02,281 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:02,281 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:27:02,281 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:21 [2020-10-19 18:27:02,341 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:27:02,341 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:02,359 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:02,364 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:27:02,364 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:02,380 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:02,381 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:27:02,381 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:48, output treesize:41 [2020-10-19 18:27:02,534 INFO L441 ElimStorePlain]: Different costs {1=[|v_#valid_33|], 3=[|v_#length_22|]} [2020-10-19 18:27:02,544 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:02,544 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-19 18:27:02,545 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:02,566 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:02,590 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:02,590 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 52 [2020-10-19 18:27:02,591 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:02,636 INFO L625 ElimStorePlain]: treesize reduction 26, result has 66.2 percent of original size [2020-10-19 18:27:02,638 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:27:02,638 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:58, output treesize:51 [2020-10-19 18:27:02,746 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-10-19 18:27:02,747 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:02,778 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:02,784 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2020-10-19 18:27:02,785 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:02,843 INFO L625 ElimStorePlain]: treesize reduction 4, result has 94.1 percent of original size [2020-10-19 18:27:02,845 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:27:02,846 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:76, output treesize:74 [2020-10-19 18:27:04,016 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-19 18:27:04,017 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-19 18:27:04,018 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-19 18:27:04,031 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:04,031 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 72 treesize of output 62 [2020-10-19 18:27:04,033 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-10-19 18:27:04,034 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-10-19 18:27:04,035 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:27:04,112 INFO L625 ElimStorePlain]: treesize reduction 10, result has 87.0 percent of original size [2020-10-19 18:27:04,117 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-19 18:27:04,122 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:04,123 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2020-10-19 18:27:04,124 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:04,169 INFO L625 ElimStorePlain]: treesize reduction 5, result has 90.0 percent of original size [2020-10-19 18:27:04,172 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-19 18:27:04,172 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:112, output treesize:27 [2020-10-19 18:27:04,363 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:27:04,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:27:04,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 38 [2020-10-19 18:27:04,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638490385] [2020-10-19 18:27:04,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-19 18:27:04,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:27:04,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-19 18:27:04,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1394, Unknown=0, NotChecked=0, Total=1482 [2020-10-19 18:27:04,367 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand 39 states. [2020-10-19 18:27:06,240 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 98 [2020-10-19 18:27:06,493 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 76 [2020-10-19 18:27:07,400 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 107 [2020-10-19 18:27:07,811 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 121 [2020-10-19 18:27:08,396 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 105 [2020-10-19 18:27:08,765 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 110 [2020-10-19 18:27:09,021 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2020-10-19 18:27:09,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:27:09,973 INFO L93 Difference]: Finished difference Result 98 states and 106 transitions. [2020-10-19 18:27:09,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-19 18:27:09,974 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 38 [2020-10-19 18:27:09,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:27:09,975 INFO L225 Difference]: With dead ends: 98 [2020-10-19 18:27:09,975 INFO L226 Difference]: Without dead ends: 98 [2020-10-19 18:27:09,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=364, Invalid=3176, Unknown=0, NotChecked=0, Total=3540 [2020-10-19 18:27:09,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-19 18:27:09,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 72. [2020-10-19 18:27:09,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-19 18:27:09,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2020-10-19 18:27:09,980 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 38 [2020-10-19 18:27:09,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:27:09,981 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2020-10-19 18:27:09,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-19 18:27:09,981 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2020-10-19 18:27:09,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-19 18:27:09,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:27:09,982 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:27:10,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:27:10,185 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, sll_lengthErr1REQUIRES_VIOLATION, sll_lengthErr0REQUIRES_VIOLATION]=== [2020-10-19 18:27:10,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:27:10,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1466607831, now seen corresponding path program 1 times [2020-10-19 18:27:10,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:27:10,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037364325] [2020-10-19 18:27:10,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:27:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:10,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:27:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:10,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 18:27:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:10,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-19 18:27:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:10,326 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-19 18:27:10,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037364325] [2020-10-19 18:27:10,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:27:10,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-19 18:27:10,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390501905] [2020-10-19 18:27:10,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 18:27:10,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:27:10,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 18:27:10,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:27:10,328 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand 11 states. [2020-10-19 18:27:10,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:27:10,730 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2020-10-19 18:27:10,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:27:10,731 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-10-19 18:27:10,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:27:10,733 INFO L225 Difference]: With dead ends: 88 [2020-10-19 18:27:10,733 INFO L226 Difference]: Without dead ends: 85 [2020-10-19 18:27:10,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-10-19 18:27:10,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-19 18:27:10,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 72. [2020-10-19 18:27:10,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-19 18:27:10,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2020-10-19 18:27:10,738 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 39 [2020-10-19 18:27:10,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:27:10,739 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions. [2020-10-19 18:27:10,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 18:27:10,739 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2020-10-19 18:27:10,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-19 18:27:10,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:27:10,740 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:27:10,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-19 18:27:10,741 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, sll_lengthErr1REQUIRES_VIOLATION, sll_lengthErr0REQUIRES_VIOLATION]=== [2020-10-19 18:27:10,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:27:10,741 INFO L82 PathProgramCache]: Analyzing trace with hash -267592498, now seen corresponding path program 3 times [2020-10-19 18:27:10,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:27:10,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301188865] [2020-10-19 18:27:10,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:27:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:11,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:27:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:11,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 18:27:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:11,720 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:27:11,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301188865] [2020-10-19 18:27:11,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483650206] [2020-10-19 18:27:11,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:27:11,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-19 18:27:11,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:27:11,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 86 conjunts are in the unsatisfiable core [2020-10-19 18:27:11,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:27:11,859 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:27:11,859 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:11,867 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:11,867 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:27:11,867 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2020-10-19 18:27:11,923 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:27:11,924 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:11,935 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:11,939 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:27:11,939 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:11,949 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:11,950 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:27:11,950 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:34, output treesize:26 [2020-10-19 18:27:12,071 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:12,072 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-10-19 18:27:12,073 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:12,109 INFO L625 ElimStorePlain]: treesize reduction 14, result has 71.4 percent of original size [2020-10-19 18:27:12,109 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:27:12,110 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:35 [2020-10-19 18:27:12,206 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-10-19 18:27:12,207 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:12,239 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:12,247 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-10-19 18:27:12,248 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:12,277 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:12,278 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:27:12,278 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:60, output treesize:58 [2020-10-19 18:27:12,523 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:12,524 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 30 [2020-10-19 18:27:12,525 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:12,556 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:12,557 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:27:12,558 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:69, output treesize:62 [2020-10-19 18:27:12,720 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-19 18:27:12,756 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:12,757 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 75 [2020-10-19 18:27:12,758 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:12,850 INFO L625 ElimStorePlain]: treesize reduction 52, result has 60.6 percent of original size [2020-10-19 18:27:12,857 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2020-10-19 18:27:12,858 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:12,896 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:12,899 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:27:12,900 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:84, output treesize:94 [2020-10-19 18:27:14,471 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-19 18:27:14,473 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-19 18:27:14,475 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-19 18:27:14,555 INFO L350 Elim1Store]: treesize reduction 16, result has 82.6 percent of original size [2020-10-19 18:27:14,556 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 119 treesize of output 131 [2020-10-19 18:27:14,560 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-10-19 18:27:14,563 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-10-19 18:27:14,564 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-10-19 18:27:14,565 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-10-19 18:27:14,568 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-19 18:27:14,569 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-10-19 18:27:14,574 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-10-19 18:27:14,576 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-10-19 18:27:14,577 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-10-19 18:27:14,578 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-10-19 18:27:14,579 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-19 18:27:14,580 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-10-19 18:27:14,584 INFO L545 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-19 18:27:14,688 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2020-10-19 18:27:14,689 INFO L625 ElimStorePlain]: treesize reduction 68, result has 51.8 percent of original size [2020-10-19 18:27:14,704 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:14,704 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 35 [2020-10-19 18:27:14,706 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:27:14,707 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:27:14,708 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:14,757 INFO L625 ElimStorePlain]: treesize reduction 10, result has 80.0 percent of original size [2020-10-19 18:27:14,760 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:27:14,760 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:151, output treesize:7 [2020-10-19 18:27:14,939 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:27:14,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:27:14,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23] total 45 [2020-10-19 18:27:14,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768952006] [2020-10-19 18:27:14,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-19 18:27:14,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:27:14,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-19 18:27:14,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1886, Unknown=0, NotChecked=0, Total=1980 [2020-10-19 18:27:14,941 INFO L87 Difference]: Start difference. First operand 72 states and 78 transitions. Second operand 45 states. [2020-10-19 18:27:17,274 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-10-19 18:27:18,872 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 141 [2020-10-19 18:27:20,118 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-19 18:27:20,796 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 119 [2020-10-19 18:27:21,123 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-19 18:27:22,057 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 117 [2020-10-19 18:27:22,454 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-19 18:27:24,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:27:24,068 INFO L93 Difference]: Finished difference Result 123 states and 135 transitions. [2020-10-19 18:27:24,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-19 18:27:24,069 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 41 [2020-10-19 18:27:24,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:27:24,071 INFO L225 Difference]: With dead ends: 123 [2020-10-19 18:27:24,071 INFO L226 Difference]: Without dead ends: 123 [2020-10-19 18:27:24,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=330, Invalid=4782, Unknown=0, NotChecked=0, Total=5112 [2020-10-19 18:27:24,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-19 18:27:24,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 95. [2020-10-19 18:27:24,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-19 18:27:24,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2020-10-19 18:27:24,078 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 41 [2020-10-19 18:27:24,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:27:24,079 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2020-10-19 18:27:24,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-19 18:27:24,079 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2020-10-19 18:27:24,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-19 18:27:24,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:27:24,080 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:27:24,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-19 18:27:24,295 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, sll_lengthErr1REQUIRES_VIOLATION, sll_lengthErr0REQUIRES_VIOLATION]=== [2020-10-19 18:27:24,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:27:24,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1505329797, now seen corresponding path program 1 times [2020-10-19 18:27:24,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:27:24,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223495200] [2020-10-19 18:27:24,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:27:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:24,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:27:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:24,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 18:27:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:24,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-19 18:27:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:24,526 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 18:27:24,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223495200] [2020-10-19 18:27:24,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586213593] [2020-10-19 18:27:24,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:27:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:24,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 34 conjunts are in the unsatisfiable core [2020-10-19 18:27:24,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:27:24,668 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:27:24,669 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:27:24,676 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:27:24,677 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:27:24,677 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:15 [2020-10-19 18:27:25,160 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 18:27:25,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:27:25,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26 [2020-10-19 18:27:25,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117022030] [2020-10-19 18:27:25,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-19 18:27:25,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:27:25,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-19 18:27:25,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2020-10-19 18:27:25,163 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand 26 states. [2020-10-19 18:27:32,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:27:32,881 INFO L93 Difference]: Finished difference Result 114 states and 122 transitions. [2020-10-19 18:27:32,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-19 18:27:32,884 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 42 [2020-10-19 18:27:32,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:27:32,885 INFO L225 Difference]: With dead ends: 114 [2020-10-19 18:27:32,886 INFO L226 Difference]: Without dead ends: 108 [2020-10-19 18:27:32,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=183, Invalid=1377, Unknown=0, NotChecked=0, Total=1560 [2020-10-19 18:27:32,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-19 18:27:32,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 95. [2020-10-19 18:27:32,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-19 18:27:32,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 102 transitions. [2020-10-19 18:27:32,893 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 102 transitions. Word has length 42 [2020-10-19 18:27:32,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:27:32,893 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 102 transitions. [2020-10-19 18:27:32,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-19 18:27:32,894 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 102 transitions. [2020-10-19 18:27:32,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-19 18:27:32,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:27:32,896 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:27:33,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-19 18:27:33,107 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, sll_lengthErr1REQUIRES_VIOLATION, sll_lengthErr0REQUIRES_VIOLATION]=== [2020-10-19 18:27:33,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:27:33,107 INFO L82 PathProgramCache]: Analyzing trace with hash 2043365801, now seen corresponding path program 2 times [2020-10-19 18:27:33,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:27:33,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081151423] [2020-10-19 18:27:33,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:27:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:33,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:27:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:33,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 18:27:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:33,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-19 18:27:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:33,337 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-19 18:27:33,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081151423] [2020-10-19 18:27:33,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735009114] [2020-10-19 18:27:33,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:27:33,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 18:27:33,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:27:33,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-19 18:27:33,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:27:33,514 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-19 18:27:33,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:27:33,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 10 [2020-10-19 18:27:33,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501184684] [2020-10-19 18:27:33,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 18:27:33,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:27:33,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 18:27:33,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:27:33,515 INFO L87 Difference]: Start difference. First operand 95 states and 102 transitions. Second operand 10 states. [2020-10-19 18:27:34,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:27:34,056 INFO L93 Difference]: Finished difference Result 129 states and 146 transitions. [2020-10-19 18:27:34,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:27:34,058 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-10-19 18:27:34,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:27:34,059 INFO L225 Difference]: With dead ends: 129 [2020-10-19 18:27:34,059 INFO L226 Difference]: Without dead ends: 129 [2020-10-19 18:27:34,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-19 18:27:34,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-19 18:27:34,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 109. [2020-10-19 18:27:34,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-19 18:27:34,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 123 transitions. [2020-10-19 18:27:34,070 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 123 transitions. Word has length 45 [2020-10-19 18:27:34,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:27:34,071 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 123 transitions. [2020-10-19 18:27:34,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 18:27:34,071 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 123 transitions. [2020-10-19 18:27:34,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-19 18:27:34,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:27:34,072 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:27:34,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-19 18:27:34,273 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, sll_lengthErr1REQUIRES_VIOLATION, sll_lengthErr0REQUIRES_VIOLATION]=== [2020-10-19 18:27:34,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:27:34,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1078371956, now seen corresponding path program 1 times [2020-10-19 18:27:34,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:27:34,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874454666] [2020-10-19 18:27:34,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:27:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:34,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:27:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:34,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 18:27:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:34,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-19 18:27:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:34,400 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-19 18:27:34,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874454666] [2020-10-19 18:27:34,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:27:34,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-19 18:27:34,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036001057] [2020-10-19 18:27:34,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 18:27:34,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:27:34,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 18:27:34,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:27:34,403 INFO L87 Difference]: Start difference. First operand 109 states and 123 transitions. Second operand 11 states. [2020-10-19 18:27:34,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:27:34,847 INFO L93 Difference]: Finished difference Result 122 states and 136 transitions. [2020-10-19 18:27:34,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 18:27:34,848 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-10-19 18:27:34,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:27:34,849 INFO L225 Difference]: With dead ends: 122 [2020-10-19 18:27:34,849 INFO L226 Difference]: Without dead ends: 122 [2020-10-19 18:27:34,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-10-19 18:27:34,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-19 18:27:34,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 110. [2020-10-19 18:27:34,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-19 18:27:34,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 126 transitions. [2020-10-19 18:27:34,854 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 126 transitions. Word has length 46 [2020-10-19 18:27:34,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:27:34,855 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 126 transitions. [2020-10-19 18:27:34,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 18:27:34,855 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 126 transitions. [2020-10-19 18:27:34,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-19 18:27:34,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:27:34,856 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:27:34,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-19 18:27:34,857 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, sll_lengthErr1REQUIRES_VIOLATION, sll_lengthErr0REQUIRES_VIOLATION]=== [2020-10-19 18:27:34,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:27:34,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1078371955, now seen corresponding path program 1 times [2020-10-19 18:27:34,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:27:34,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555583612] [2020-10-19 18:27:34,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:27:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:34,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:27:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:34,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 18:27:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:35,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-19 18:27:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:35,026 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 18:27:35,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555583612] [2020-10-19 18:27:35,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:27:35,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-19 18:27:35,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793124486] [2020-10-19 18:27:35,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 18:27:35,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:27:35,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 18:27:35,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:27:35,028 INFO L87 Difference]: Start difference. First operand 110 states and 126 transitions. Second operand 11 states. [2020-10-19 18:27:35,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:27:35,642 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2020-10-19 18:27:35,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 18:27:35,643 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-10-19 18:27:35,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:27:35,644 INFO L225 Difference]: With dead ends: 117 [2020-10-19 18:27:35,644 INFO L226 Difference]: Without dead ends: 117 [2020-10-19 18:27:35,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-10-19 18:27:35,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-19 18:27:35,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 112. [2020-10-19 18:27:35,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-19 18:27:35,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2020-10-19 18:27:35,652 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 46 [2020-10-19 18:27:35,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:27:35,653 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2020-10-19 18:27:35,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 18:27:35,653 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2020-10-19 18:27:35,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-19 18:27:35,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:27:35,655 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:27:35,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-19 18:27:35,656 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, sll_lengthErr1REQUIRES_VIOLATION, sll_lengthErr0REQUIRES_VIOLATION]=== [2020-10-19 18:27:35,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:27:35,656 INFO L82 PathProgramCache]: Analyzing trace with hash -579936233, now seen corresponding path program 4 times [2020-10-19 18:27:35,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:27:35,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105498895] [2020-10-19 18:27:35,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:27:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:35,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:27:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:35,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 18:27:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:27:35,822 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-19 18:27:35,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105498895] [2020-10-19 18:27:35,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070192907] [2020-10-19 18:27:35,823 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:27:35,990 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-19 18:27:35,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:27:35,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:27:35,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:27:36,033 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-19 18:27:36,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:27:36,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 12 [2020-10-19 18:27:36,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452803101] [2020-10-19 18:27:36,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 18:27:36,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:27:36,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 18:27:36,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:27:36,035 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand 12 states. [2020-10-19 18:27:36,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:27:36,610 INFO L93 Difference]: Finished difference Result 122 states and 136 transitions. [2020-10-19 18:27:36,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 18:27:36,612 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-10-19 18:27:36,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:27:36,613 INFO L225 Difference]: With dead ends: 122 [2020-10-19 18:27:36,614 INFO L226 Difference]: Without dead ends: 122 [2020-10-19 18:27:36,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-19 18:27:36,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-19 18:27:36,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 107. [2020-10-19 18:27:36,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-19 18:27:36,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 119 transitions. [2020-10-19 18:27:36,621 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 119 transitions. Word has length 45 [2020-10-19 18:27:36,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:27:36,622 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 119 transitions. [2020-10-19 18:27:36,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 18:27:36,622 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 119 transitions. [2020-10-19 18:27:36,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-19 18:27:36,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:27:36,624 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:27:36,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:27:36,830 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, sll_lengthErr1REQUIRES_VIOLATION, sll_lengthErr0REQUIRES_VIOLATION]=== [2020-10-19 18:27:36,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:27:36,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1856012293, now seen corresponding path program 3 times [2020-10-19 18:27:36,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:27:36,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10303065] [2020-10-19 18:27:36,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:27:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:27:36,878 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:27:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:27:36,909 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:27:36,969 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:27:36,970 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:27:36,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-19 18:27:37,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:27:37 BoogieIcfgContainer [2020-10-19 18:27:37,041 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:27:37,042 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:27:37,042 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:27:37,042 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:27:37,043 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:26:40" (3/4) ... [2020-10-19 18:27:37,045 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 18:27:37,117 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:27:37,118 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:27:37,120 INFO L168 Benchmark]: Toolchain (without parser) took 58158.70 ms. Allocated memory was 1.0 GB in the beginning and 1.6 GB in the end (delta: 559.9 MB). Free memory was 958.6 MB in the beginning and 841.7 MB in the end (delta: 116.9 MB). Peak memory consumption was 676.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:27:37,120 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:27:37,121 INFO L168 Benchmark]: CACSL2BoogieTranslator took 662.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -157.1 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:27:37,121 INFO L168 Benchmark]: Boogie Preprocessor took 82.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:27:37,122 INFO L168 Benchmark]: RCFGBuilder took 661.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 51.5 MB). Peak memory consumption was 51.5 MB. Max. memory is 11.5 GB. [2020-10-19 18:27:37,123 INFO L168 Benchmark]: TraceAbstraction took 56663.66 ms. Allocated memory was 1.2 GB in the beginning and 1.6 GB in the end (delta: 419.4 MB). Free memory was 1.1 GB in the beginning and 856.3 MB in the end (delta: 200.8 MB). Peak memory consumption was 620.3 MB. Max. memory is 11.5 GB. [2020-10-19 18:27:37,123 INFO L168 Benchmark]: Witness Printer took 76.60 ms. Allocated memory is still 1.6 GB. Free memory was 856.3 MB in the beginning and 841.7 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:27:37,125 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 662.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -157.1 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 82.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 661.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 51.5 MB). Peak memory consumption was 51.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 56663.66 ms. Allocated memory was 1.2 GB in the beginning and 1.6 GB in the end (delta: 419.4 MB). Free memory was 1.1 GB in the beginning and 856.3 MB in the end (delta: 200.8 MB). Peak memory consumption was 620.3 MB. Max. memory is 11.5 GB. * Witness Printer took 76.60 ms. Allocated memory is still 1.6 GB. Free memory was 856.3 MB in the beginning and 841.7 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L603] int len = 2; VAL [len=2] [L604] len < 32 && __VERIFIER_nondet_int() [L604] len < 32 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, len=2, len < 32 && __VERIFIER_nondet_int()=0] [L604] COND FALSE !(len < 32 && __VERIFIER_nondet_int()) [L607] CALL, EXPR sll_create(len + 1) VAL [\old(len)=3] [L575] SLL head = ((void *)0); VAL [\old(len)=3, head={0:0}, len=3] [L576] COND TRUE len > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); VAL [\old(len)=3, head={0:0}, len=3, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L578] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=3, head={0:0}, len=3, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L581] new_head->next = head VAL [\old(len)=3, head={0:0}, len=3, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L582] head = new_head [L583] len-- VAL [\old(len)=3, head={-1:0}, len=2, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L576] COND TRUE len > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); VAL [\old(len)=3, head={-1:0}, len=2, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L578] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=3, head={-1:0}, len=2, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L581] new_head->next = head VAL [\old(len)=3, head={-1:0}, len=2, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L582] head = new_head [L583] len-- VAL [\old(len)=3, head={-2:0}, len=1, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L576] COND TRUE len > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); VAL [\old(len)=3, head={-2:0}, len=1, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L578] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=3, head={-2:0}, len=1, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L581] new_head->next = head VAL [\old(len)=3, head={-2:0}, len=1, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L582] head = new_head [L583] len-- VAL [\old(len)=3, head={-3:0}, len=0, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L576] COND FALSE !(len > 0) VAL [\old(len)=3, head={-3:0}, len=0, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L585] return head; VAL [\old(len)=3, \result={-3:0}, head={-3:0}, len=0, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L607] RET, EXPR sll_create(len + 1) VAL [len=2, sll_create(len + 1)={-3:0}] [L607] SLL s = sll_create(len + 1); [L608] CALL, EXPR sll_length(s) VAL [head={-3:0}] [L588] int len = 0; VAL [head={-3:0}, head={-3:0}, len=0] [L589] COND TRUE \read(head) [L590] len++ VAL [head={-3:0}, head={-3:0}, len=1] [L591] EXPR head->next VAL [head={-3:0}, head={-3:0}, head->next={-2:0}, len=1] [L591] head = head->next [L589] COND TRUE \read(head) [L590] len++ VAL [head={-3:0}, head={-2:0}, len=2] [L591] EXPR head->next VAL [head={-3:0}, head={-2:0}, head->next={-1:0}, len=2] [L591] head = head->next [L589] COND TRUE \read(head) [L590] len++ VAL [head={-3:0}, head={-1:0}, len=3] [L591] EXPR head->next VAL [head={-3:0}, head={-1:0}, head->next={0:0}, len=3] [L591] head = head->next [L589] COND FALSE !(\read(head)) VAL [head={0:0}, head={-3:0}, len=3] [L593] return len; VAL [\result=3, head={-3:0}, head={0:0}, len=3] [L608] RET, EXPR sll_length(s) VAL [len=2, s={-3:0}, sll_length(s)=3] [L608] COND TRUE len != sll_length(s) [L613] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "sll_length_check-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 71 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 56.5s, OverallIterations: 21, TraceHistogramMax: 4, AutomataDifference: 38.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 852 SDtfs, 2303 SDslu, 2756 SDs, 0 SdLazy, 13416 SolverSat, 542 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 20.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 812 GetRequests, 362 SyntacticMatches, 6 SemanticMatches, 444 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1844 ImplicationChecksByTransitivity, 23.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 20 MinimizatonAttempts, 374 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 13.8s InterpolantComputationTime, 1051 NumberOfCodeBlocks, 1048 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 973 ConstructedInterpolants, 89 QuantifiedInterpolants, 416690 SizeOfPredicates, 146 NumberOfNonLiveVariables, 2209 ConjunctsInSsa, 391 ConjunctsInUnsatCore, 30 InterpolantComputations, 10 PerfectInterpolantSequences, 257/459 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...