./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/list-ext3-properties/dll_nullified-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/dll_nullified-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 c6bee9027c6ee41df2f7df0c67f6de4e3d806cb7 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 18:26:35,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:26:35,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:26:35,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:26:35,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:26:35,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:26:35,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:26:35,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:26:35,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:26:35,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:26:35,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:26:35,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:26:35,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:26:35,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:26:35,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:26:35,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:26:35,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:26:35,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:26:35,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:26:35,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:26:35,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:26:35,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:26:35,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:26:35,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:26:35,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:26:35,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:26:35,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:26:35,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:26:35,528 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:26:35,529 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:26:35,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:26:35,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:26:35,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:26:35,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:26:35,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:26:35,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:26:35,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:26:35,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:26:35,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:26:35,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:26:35,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:26:35,537 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2020-10-19 18:26:35,561 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:26:35,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:26:35,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:26:35,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:26:35,562 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:26:35,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:26:35,563 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:26:35,563 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:26:35,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:26:35,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:26:35,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:26:35,564 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:26:35,564 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:26:35,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:26:35,565 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:26:35,565 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:26:35,565 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:26:35,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:26:35,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:26:35,566 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:26:35,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:26:35,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:26:35,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:26:35,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:26:35,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:26:35,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:26:35,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:26:35,567 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 -> c6bee9027c6ee41df2f7df0c67f6de4e3d806cb7 [2020-10-19 18:26:35,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:26:35,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:26:35,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:26:35,931 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:26:35,932 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:26:35,933 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i [2020-10-19 18:26:36,004 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/275a5d46a/5630e65599ae4fa69230a8ebc4d60b87/FLAGc6e33b5cc [2020-10-19 18:26:36,604 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:26:36,605 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i [2020-10-19 18:26:36,621 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/275a5d46a/5630e65599ae4fa69230a8ebc4d60b87/FLAGc6e33b5cc [2020-10-19 18:26:36,898 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/275a5d46a/5630e65599ae4fa69230a8ebc4d60b87 [2020-10-19 18:26:36,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:26:36,908 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:26:36,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:26:36,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:26:36,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:26:36,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:26:36" (1/1) ... [2020-10-19 18:26:36,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42c91dad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:36, skipping insertion in model container [2020-10-19 18:26:36,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:26:36" (1/1) ... [2020-10-19 18:26:36,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:26:36,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:26:37,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:26:37,424 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:26:37,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:26:37,561 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:26:37,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:37 WrapperNode [2020-10-19 18:26:37,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:26:37,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:26:37,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:26:37,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:26:37,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:37" (1/1) ... [2020-10-19 18:26:37,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:37" (1/1) ... [2020-10-19 18:26:37,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:37" (1/1) ... [2020-10-19 18:26:37,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:37" (1/1) ... [2020-10-19 18:26:37,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:37" (1/1) ... [2020-10-19 18:26:37,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:37" (1/1) ... [2020-10-19 18:26:37,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:37" (1/1) ... [2020-10-19 18:26:37,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:26:37,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:26:37,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:26:37,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:26:37,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:37" (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 18:26:37,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:26:37,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:26:37,701 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:26:37,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 18:26:37,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 18:26:37,702 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-19 18:26:37,702 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-10-19 18:26:37,702 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:26:37,702 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:26:37,703 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:26:37,703 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-19 18:26:37,703 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-19 18:26:37,703 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:26:37,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:26:37,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:26:37,704 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 18:26:37,704 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 18:26:37,704 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:26:37,705 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:26:37,705 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:26:37,705 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:26:37,705 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:26:37,706 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:26:37,706 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:26:37,706 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:26:37,706 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:26:37,706 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:26:37,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:26:37,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:26:37,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:26:37,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:26:37,708 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:26:37,708 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:26:37,708 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:26:37,708 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:26:37,709 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:26:37,709 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:26:37,709 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:26:37,709 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:26:37,709 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:26:37,710 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:26:37,710 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:26:37,710 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:26:37,710 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:26:37,710 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:26:37,711 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:26:37,711 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:26:37,711 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:26:37,711 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:26:37,711 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:26:37,712 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:26:37,712 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:26:37,712 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:26:37,712 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:26:37,713 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:26:37,713 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:26:37,713 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:26:37,713 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:26:37,713 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:26:37,714 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:26:37,714 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:26:37,714 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:26:37,714 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:26:37,714 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:26:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:26:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:26:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:26:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:26:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:26:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:26:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:26:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-19 18:26:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:26:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:26:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:26:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:26:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:26:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:26:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:26:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:26:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:26:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:26:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:26:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:26:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:26:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:26:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:26:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:26:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:26:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:26:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:26:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:26:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:26:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:26:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:26:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:26:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:26:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:26:37,722 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:26:37,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:26:37,722 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:26:37,722 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:26:37,722 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:26:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:26:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:26:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:26:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:26:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:26:37,724 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:26:37,724 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:26:37,724 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:26:37,724 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:26:37,724 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:26:37,725 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:26:37,725 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:26:37,725 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:26:37,725 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:26:37,725 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:26:37,726 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:26:37,726 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-19 18:26:37,726 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-10-19 18:26:37,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:26:37,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:26:37,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:26:37,727 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:26:37,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:26:37,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:26:37,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:26:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:26:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:26:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:26:38,090 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-19 18:26:38,378 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:26:38,379 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-19 18:26:38,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:26:38 BoogieIcfgContainer [2020-10-19 18:26:38,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:26:38,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:26:38,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:26:38,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:26:38,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:26:36" (1/3) ... [2020-10-19 18:26:38,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@495e2844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:26:38, skipping insertion in model container [2020-10-19 18:26:38,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:37" (2/3) ... [2020-10-19 18:26:38,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@495e2844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:26:38, skipping insertion in model container [2020-10-19 18:26:38,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:26:38" (3/3) ... [2020-10-19 18:26:38,394 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2020-10-19 18:26:38,412 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:26:38,423 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 35 error locations. [2020-10-19 18:26:38,439 INFO L253 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2020-10-19 18:26:38,465 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:26:38,465 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:26:38,466 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:26:38,466 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:26:38,466 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:26:38,467 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:26:38,467 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:26:38,468 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:26:38,499 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states. [2020-10-19 18:26:38,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 18:26:38,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:38,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:38,515 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, dll_createErr4REQUIRES_VIOLATION, dll_createErr9REQUIRES_VIOLATION, dll_createErr8REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr7REQUIRES_VIOLATION, dll_createErr6REQUIRES_VIOLATION, dll_createErr11REQUIRES_VIOLATION, dll_createErr10REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:26:38,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:38,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1623618837, now seen corresponding path program 1 times [2020-10-19 18:26:38,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:38,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40091411] [2020-10-19 18:26:38,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:38,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:38,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:38,793 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 18:26:38,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40091411] [2020-10-19 18:26:38,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:38,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:26:38,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53783567] [2020-10-19 18:26:38,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:26:38,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:38,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:26:38,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:26:38,821 INFO L87 Difference]: Start difference. First operand 104 states. Second operand 4 states. [2020-10-19 18:26:39,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:39,276 INFO L93 Difference]: Finished difference Result 156 states and 175 transitions. [2020-10-19 18:26:39,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:26:39,278 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-19 18:26:39,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:39,291 INFO L225 Difference]: With dead ends: 156 [2020-10-19 18:26:39,291 INFO L226 Difference]: Without dead ends: 147 [2020-10-19 18:26:39,293 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 18:26:39,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-19 18:26:39,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 110. [2020-10-19 18:26:39,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-19 18:26:39,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 134 transitions. [2020-10-19 18:26:39,346 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 134 transitions. Word has length 11 [2020-10-19 18:26:39,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:39,346 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 134 transitions. [2020-10-19 18:26:39,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:26:39,347 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 134 transitions. [2020-10-19 18:26:39,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 18:26:39,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:39,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:39,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:26:39,349 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, dll_createErr4REQUIRES_VIOLATION, dll_createErr9REQUIRES_VIOLATION, dll_createErr8REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr7REQUIRES_VIOLATION, dll_createErr6REQUIRES_VIOLATION, dll_createErr11REQUIRES_VIOLATION, dll_createErr10REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:26:39,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:39,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1623618838, now seen corresponding path program 1 times [2020-10-19 18:26:39,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:39,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770837792] [2020-10-19 18:26:39,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:39,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:39,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:39,471 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 18:26:39,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770837792] [2020-10-19 18:26:39,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:39,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:26:39,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906724889] [2020-10-19 18:26:39,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:26:39,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:39,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:26:39,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:26:39,478 INFO L87 Difference]: Start difference. First operand 110 states and 134 transitions. Second operand 4 states. [2020-10-19 18:26:39,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:39,894 INFO L93 Difference]: Finished difference Result 142 states and 159 transitions. [2020-10-19 18:26:39,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:26:39,894 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-19 18:26:39,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:39,896 INFO L225 Difference]: With dead ends: 142 [2020-10-19 18:26:39,896 INFO L226 Difference]: Without dead ends: 142 [2020-10-19 18:26:39,898 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 18:26:39,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-19 18:26:39,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 105. [2020-10-19 18:26:39,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-19 18:26:39,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 129 transitions. [2020-10-19 18:26:39,921 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 129 transitions. Word has length 11 [2020-10-19 18:26:39,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:39,922 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 129 transitions. [2020-10-19 18:26:39,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:26:39,922 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 129 transitions. [2020-10-19 18:26:39,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 18:26:39,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:39,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:39,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:26:39,925 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, dll_createErr4REQUIRES_VIOLATION, dll_createErr9REQUIRES_VIOLATION, dll_createErr8REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr7REQUIRES_VIOLATION, dll_createErr6REQUIRES_VIOLATION, dll_createErr11REQUIRES_VIOLATION, dll_createErr10REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:26:39,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:39,925 INFO L82 PathProgramCache]: Analyzing trace with hash -713826160, now seen corresponding path program 1 times [2020-10-19 18:26:39,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:39,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315208349] [2020-10-19 18:26:39,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:40,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:40,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:26:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:40,066 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 18:26:40,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315208349] [2020-10-19 18:26:40,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:40,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 18:26:40,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884441868] [2020-10-19 18:26:40,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:26:40,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:40,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:26:40,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:26:40,069 INFO L87 Difference]: Start difference. First operand 105 states and 129 transitions. Second operand 7 states. [2020-10-19 18:26:40,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:40,430 INFO L93 Difference]: Finished difference Result 103 states and 114 transitions. [2020-10-19 18:26:40,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:26:40,431 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-19 18:26:40,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:40,432 INFO L225 Difference]: With dead ends: 103 [2020-10-19 18:26:40,432 INFO L226 Difference]: Without dead ends: 100 [2020-10-19 18:26:40,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:26:40,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-19 18:26:40,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 86. [2020-10-19 18:26:40,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-19 18:26:40,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2020-10-19 18:26:40,444 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 14 [2020-10-19 18:26:40,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:40,444 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2020-10-19 18:26:40,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:26:40,445 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2020-10-19 18:26:40,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 18:26:40,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:40,446 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 18:26:40,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:26:40,446 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, dll_createErr4REQUIRES_VIOLATION, dll_createErr9REQUIRES_VIOLATION, dll_createErr8REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr7REQUIRES_VIOLATION, dll_createErr6REQUIRES_VIOLATION, dll_createErr11REQUIRES_VIOLATION, dll_createErr10REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:26:40,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:40,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1424889429, now seen corresponding path program 1 times [2020-10-19 18:26:40,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:40,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257734361] [2020-10-19 18:26:40,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:40,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:40,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:40,531 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 18:26:40,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257734361] [2020-10-19 18:26:40,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:40,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:26:40,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606366720] [2020-10-19 18:26:40,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:26:40,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:40,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:26:40,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:26:40,534 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand 4 states. [2020-10-19 18:26:40,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:40,756 INFO L93 Difference]: Finished difference Result 97 states and 107 transitions. [2020-10-19 18:26:40,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:26:40,757 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-19 18:26:40,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:40,758 INFO L225 Difference]: With dead ends: 97 [2020-10-19 18:26:40,758 INFO L226 Difference]: Without dead ends: 97 [2020-10-19 18:26:40,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:26:40,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-19 18:26:40,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2020-10-19 18:26:40,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-19 18:26:40,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 106 transitions. [2020-10-19 18:26:40,775 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 106 transitions. Word has length 20 [2020-10-19 18:26:40,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:40,776 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 106 transitions. [2020-10-19 18:26:40,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:26:40,777 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 106 transitions. [2020-10-19 18:26:40,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 18:26:40,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:40,779 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, 1, 1] [2020-10-19 18:26:40,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:26:40,782 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, dll_createErr4REQUIRES_VIOLATION, dll_createErr9REQUIRES_VIOLATION, dll_createErr8REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr7REQUIRES_VIOLATION, dll_createErr6REQUIRES_VIOLATION, dll_createErr11REQUIRES_VIOLATION, dll_createErr10REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:26:40,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:40,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1016601636, now seen corresponding path program 1 times [2020-10-19 18:26:40,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:40,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882356169] [2020-10-19 18:26:40,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:40,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:40,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:40,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:26:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:40,983 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 18:26:40,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882356169] [2020-10-19 18:26:40,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:40,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:26:40,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091955760] [2020-10-19 18:26:40,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:26:40,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:40,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:26:40,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:26:40,986 INFO L87 Difference]: Start difference. First operand 96 states and 106 transitions. Second operand 9 states. [2020-10-19 18:26:41,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:41,404 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2020-10-19 18:26:41,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:26:41,404 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-10-19 18:26:41,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:41,405 INFO L225 Difference]: With dead ends: 96 [2020-10-19 18:26:41,405 INFO L226 Difference]: Without dead ends: 96 [2020-10-19 18:26:41,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:26:41,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-19 18:26:41,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2020-10-19 18:26:41,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-19 18:26:41,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2020-10-19 18:26:41,411 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 26 [2020-10-19 18:26:41,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:41,412 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2020-10-19 18:26:41,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:26:41,412 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2020-10-19 18:26:41,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 18:26:41,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:41,413 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, 1, 1] [2020-10-19 18:26:41,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:26:41,414 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, dll_createErr4REQUIRES_VIOLATION, dll_createErr9REQUIRES_VIOLATION, dll_createErr8REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr7REQUIRES_VIOLATION, dll_createErr6REQUIRES_VIOLATION, dll_createErr11REQUIRES_VIOLATION, dll_createErr10REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:26:41,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:41,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1016601637, now seen corresponding path program 1 times [2020-10-19 18:26:41,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:41,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740525264] [2020-10-19 18:26:41,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:41,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:41,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:26:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:41,530 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 18:26:41,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740525264] [2020-10-19 18:26:41,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974400899] [2020-10-19 18:26:41,531 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 18:26:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:41,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:26:41,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:26:41,724 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 18:26:41,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:26:41,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 9 [2020-10-19 18:26:41,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684886112] [2020-10-19 18:26:41,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:26:41,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:41,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:26:41,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:26:41,726 INFO L87 Difference]: Start difference. First operand 90 states and 103 transitions. Second operand 9 states. [2020-10-19 18:26:42,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:42,023 INFO L93 Difference]: Finished difference Result 108 states and 123 transitions. [2020-10-19 18:26:42,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:26:42,024 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-10-19 18:26:42,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:42,025 INFO L225 Difference]: With dead ends: 108 [2020-10-19 18:26:42,026 INFO L226 Difference]: Without dead ends: 105 [2020-10-19 18:26:42,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:26:42,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-19 18:26:42,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 92. [2020-10-19 18:26:42,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-19 18:26:42,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 105 transitions. [2020-10-19 18:26:42,033 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 105 transitions. Word has length 26 [2020-10-19 18:26:42,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:42,033 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 105 transitions. [2020-10-19 18:26:42,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:26:42,033 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 105 transitions. [2020-10-19 18:26:42,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-19 18:26:42,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:42,034 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:42,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-19 18:26:42,245 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, dll_createErr4REQUIRES_VIOLATION, dll_createErr9REQUIRES_VIOLATION, dll_createErr8REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr7REQUIRES_VIOLATION, dll_createErr6REQUIRES_VIOLATION, dll_createErr11REQUIRES_VIOLATION, dll_createErr10REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:26:42,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:42,246 INFO L82 PathProgramCache]: Analyzing trace with hash -872929728, now seen corresponding path program 1 times [2020-10-19 18:26:42,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:42,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700666469] [2020-10-19 18:26:42,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:42,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:42,398 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:42,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700666469] [2020-10-19 18:26:42,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716796995] [2020-10-19 18:26:42,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 18:26:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:42,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-19 18:26:42,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:26:42,543 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 18:26:42,543 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:42,548 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:42,548 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:42,549 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:26:42,628 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:42,628 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 18:26:42,629 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:42,669 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-10-19 18:26:42,670 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 18:26:42,671 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:14 [2020-10-19 18:26:42,705 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:42,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:26:42,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2020-10-19 18:26:42,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961078135] [2020-10-19 18:26:42,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:26:42,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:42,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:26:42,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:26:42,708 INFO L87 Difference]: Start difference. First operand 92 states and 105 transitions. Second operand 9 states. [2020-10-19 18:26:43,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:43,002 INFO L93 Difference]: Finished difference Result 91 states and 104 transitions. [2020-10-19 18:26:43,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:26:43,002 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-19 18:26:43,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:43,003 INFO L225 Difference]: With dead ends: 91 [2020-10-19 18:26:43,004 INFO L226 Difference]: Without dead ends: 91 [2020-10-19 18:26:43,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:26:43,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-19 18:26:43,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-10-19 18:26:43,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-19 18:26:43,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 104 transitions. [2020-10-19 18:26:43,010 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 104 transitions. Word has length 32 [2020-10-19 18:26:43,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:43,010 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 104 transitions. [2020-10-19 18:26:43,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:26:43,011 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 104 transitions. [2020-10-19 18:26:43,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-19 18:26:43,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:43,012 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:43,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:26:43,225 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, dll_createErr4REQUIRES_VIOLATION, dll_createErr9REQUIRES_VIOLATION, dll_createErr8REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr7REQUIRES_VIOLATION, dll_createErr6REQUIRES_VIOLATION, dll_createErr11REQUIRES_VIOLATION, dll_createErr10REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:26:43,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:43,225 INFO L82 PathProgramCache]: Analyzing trace with hash 603691449, now seen corresponding path program 2 times [2020-10-19 18:26:43,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:43,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782868519] [2020-10-19 18:26:43,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:43,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:43,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:26:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:43,367 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:43,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782868519] [2020-10-19 18:26:43,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639879380] [2020-10-19 18:26:43,371 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 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 18:26:43,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 18:26:43,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:26:43,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 18:26:43,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:26:43,654 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:43,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:26:43,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2020-10-19 18:26:43,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376008546] [2020-10-19 18:26:43,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 18:26:43,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:43,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 18:26:43,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:26:43,658 INFO L87 Difference]: Start difference. First operand 91 states and 104 transitions. Second operand 11 states. [2020-10-19 18:26:44,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:44,131 INFO L93 Difference]: Finished difference Result 119 states and 133 transitions. [2020-10-19 18:26:44,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 18:26:44,132 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-10-19 18:26:44,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:44,133 INFO L225 Difference]: With dead ends: 119 [2020-10-19 18:26:44,133 INFO L226 Difference]: Without dead ends: 116 [2020-10-19 18:26:44,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-10-19 18:26:44,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-19 18:26:44,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 104. [2020-10-19 18:26:44,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-19 18:26:44,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 117 transitions. [2020-10-19 18:26:44,139 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 117 transitions. Word has length 38 [2020-10-19 18:26:44,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:44,140 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 117 transitions. [2020-10-19 18:26:44,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 18:26:44,140 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 117 transitions. [2020-10-19 18:26:44,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-19 18:26:44,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:44,142 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:44,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:26:44,344 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, dll_createErr4REQUIRES_VIOLATION, dll_createErr9REQUIRES_VIOLATION, dll_createErr8REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr7REQUIRES_VIOLATION, dll_createErr6REQUIRES_VIOLATION, dll_createErr11REQUIRES_VIOLATION, dll_createErr10REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:26:44,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:44,344 INFO L82 PathProgramCache]: Analyzing trace with hash -222202587, now seen corresponding path program 1 times [2020-10-19 18:26:44,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:44,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062293747] [2020-10-19 18:26:44,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:44,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:44,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:26:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:44,520 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:44,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062293747] [2020-10-19 18:26:44,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909780925] [2020-10-19 18:26:44,521 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 18:26:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:44,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:26:44,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:26:44,685 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:44,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:26:44,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 11 [2020-10-19 18:26:44,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665522297] [2020-10-19 18:26:44,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 18:26:44,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:44,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 18:26:44,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:26:44,687 INFO L87 Difference]: Start difference. First operand 104 states and 117 transitions. Second operand 11 states. [2020-10-19 18:26:45,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:45,001 INFO L93 Difference]: Finished difference Result 132 states and 147 transitions. [2020-10-19 18:26:45,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 18:26:45,001 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-10-19 18:26:45,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:45,003 INFO L225 Difference]: With dead ends: 132 [2020-10-19 18:26:45,005 INFO L226 Difference]: Without dead ends: 129 [2020-10-19 18:26:45,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-19 18:26:45,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-19 18:26:45,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 117. [2020-10-19 18:26:45,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-19 18:26:45,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 131 transitions. [2020-10-19 18:26:45,013 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 131 transitions. Word has length 52 [2020-10-19 18:26:45,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:45,013 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 131 transitions. [2020-10-19 18:26:45,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 18:26:45,014 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 131 transitions. [2020-10-19 18:26:45,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-19 18:26:45,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:45,020 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:45,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:26:45,229 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, dll_createErr4REQUIRES_VIOLATION, dll_createErr9REQUIRES_VIOLATION, dll_createErr8REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr7REQUIRES_VIOLATION, dll_createErr6REQUIRES_VIOLATION, dll_createErr11REQUIRES_VIOLATION, dll_createErr10REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:26:45,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:45,230 INFO L82 PathProgramCache]: Analyzing trace with hash -710767347, now seen corresponding path program 2 times [2020-10-19 18:26:45,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:45,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750141259] [2020-10-19 18:26:45,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:45,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:45,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:45,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:26:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:45,439 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:45,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750141259] [2020-10-19 18:26:45,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518794891] [2020-10-19 18:26:45,439 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 18:26:45,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 18:26:45,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:26:45,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 18:26:45,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:26:45,641 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:45,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:26:45,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 12 [2020-10-19 18:26:45,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094915810] [2020-10-19 18:26:45,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 18:26:45,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:45,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 18:26:45,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:26:45,643 INFO L87 Difference]: Start difference. First operand 117 states and 131 transitions. Second operand 12 states. [2020-10-19 18:26:45,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:45,973 INFO L93 Difference]: Finished difference Result 145 states and 161 transitions. [2020-10-19 18:26:45,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 18:26:45,974 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2020-10-19 18:26:45,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:45,976 INFO L225 Difference]: With dead ends: 145 [2020-10-19 18:26:45,976 INFO L226 Difference]: Without dead ends: 142 [2020-10-19 18:26:45,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-10-19 18:26:45,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-19 18:26:45,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 130. [2020-10-19 18:26:45,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-19 18:26:45,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 145 transitions. [2020-10-19 18:26:45,985 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 145 transitions. Word has length 65 [2020-10-19 18:26:45,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:45,987 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 145 transitions. [2020-10-19 18:26:45,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 18:26:45,987 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 145 transitions. [2020-10-19 18:26:45,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-19 18:26:45,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:45,993 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:46,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-19 18:26:46,207 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, dll_createErr4REQUIRES_VIOLATION, dll_createErr9REQUIRES_VIOLATION, dll_createErr8REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr7REQUIRES_VIOLATION, dll_createErr6REQUIRES_VIOLATION, dll_createErr11REQUIRES_VIOLATION, dll_createErr10REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:26:46,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:46,208 INFO L82 PathProgramCache]: Analyzing trace with hash 108891685, now seen corresponding path program 3 times [2020-10-19 18:26:46,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:46,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656175916] [2020-10-19 18:26:46,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:46,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:46,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:46,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:26:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:46,511 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-19 18:26:46,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656175916] [2020-10-19 18:26:46,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:46,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:26:46,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327785670] [2020-10-19 18:26:46,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:26:46,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:46,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:26:46,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:26:46,521 INFO L87 Difference]: Start difference. First operand 130 states and 145 transitions. Second operand 9 states. [2020-10-19 18:26:47,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:47,011 INFO L93 Difference]: Finished difference Result 164 states and 185 transitions. [2020-10-19 18:26:47,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:26:47,012 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-10-19 18:26:47,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:47,014 INFO L225 Difference]: With dead ends: 164 [2020-10-19 18:26:47,014 INFO L226 Difference]: Without dead ends: 164 [2020-10-19 18:26:47,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:26:47,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-19 18:26:47,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 156. [2020-10-19 18:26:47,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-19 18:26:47,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 178 transitions. [2020-10-19 18:26:47,026 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 178 transitions. Word has length 78 [2020-10-19 18:26:47,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:47,028 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 178 transitions. [2020-10-19 18:26:47,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:26:47,029 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 178 transitions. [2020-10-19 18:26:47,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-19 18:26:47,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:47,034 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:47,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 18:26:47,034 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, dll_createErr4REQUIRES_VIOLATION, dll_createErr9REQUIRES_VIOLATION, dll_createErr8REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr7REQUIRES_VIOLATION, dll_createErr6REQUIRES_VIOLATION, dll_createErr11REQUIRES_VIOLATION, dll_createErr10REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:26:47,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:47,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1392676980, now seen corresponding path program 1 times [2020-10-19 18:26:47,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:47,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709199548] [2020-10-19 18:26:47,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:47,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:47,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:26:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:47,296 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-19 18:26:47,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709199548] [2020-10-19 18:26:47,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:47,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-19 18:26:47,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784553206] [2020-10-19 18:26:47,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:26:47,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:47,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:26:47,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:26:47,299 INFO L87 Difference]: Start difference. First operand 156 states and 178 transitions. Second operand 9 states. [2020-10-19 18:26:47,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:47,641 INFO L93 Difference]: Finished difference Result 161 states and 182 transitions. [2020-10-19 18:26:47,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:26:47,643 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-10-19 18:26:47,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:47,644 INFO L225 Difference]: With dead ends: 161 [2020-10-19 18:26:47,644 INFO L226 Difference]: Without dead ends: 161 [2020-10-19 18:26:47,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:26:47,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-19 18:26:47,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 156. [2020-10-19 18:26:47,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-19 18:26:47,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 177 transitions. [2020-10-19 18:26:47,649 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 177 transitions. Word has length 82 [2020-10-19 18:26:47,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:47,650 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 177 transitions. [2020-10-19 18:26:47,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:26:47,650 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 177 transitions. [2020-10-19 18:26:47,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-19 18:26:47,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:47,651 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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 18:26:47,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-19 18:26:47,652 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, dll_createErr4REQUIRES_VIOLATION, dll_createErr9REQUIRES_VIOLATION, dll_createErr8REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr7REQUIRES_VIOLATION, dll_createErr6REQUIRES_VIOLATION, dll_createErr11REQUIRES_VIOLATION, dll_createErr10REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:26:47,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:47,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1468486517, now seen corresponding path program 1 times [2020-10-19 18:26:47,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:47,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530173674] [2020-10-19 18:26:47,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:47,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:47,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:26:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:47,983 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 74 proven. 11 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-10-19 18:26:47,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530173674] [2020-10-19 18:26:47,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498868897] [2020-10-19 18:26:47,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 18:26:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:48,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 46 conjunts are in the unsatisfiable core [2020-10-19 18:26:48,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:26:48,227 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 18:26:48,227 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:48,233 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:48,234 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:48,234 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:26:48,298 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:48,299 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 18:26:48,300 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:48,303 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:48,303 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:48,303 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:4 [2020-10-19 18:26:48,312 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 18:26:48,312 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:48,319 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:48,319 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:48,320 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:12 [2020-10-19 18:26:48,352 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 26 treesize of output 21 [2020-10-19 18:26:48,373 INFO L350 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2020-10-19 18:26:48,374 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 29 treesize of output 33 [2020-10-19 18:26:48,375 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:48,396 INFO L625 ElimStorePlain]: treesize reduction 13, result has 56.7 percent of original size [2020-10-19 18:26:48,396 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:48,405 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:48,405 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:48,406 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:30, output treesize:21 [2020-10-19 18:26:48,484 INFO L350 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2020-10-19 18:26:48,485 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2020-10-19 18:26:48,490 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:48,501 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:48,504 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 18:26:48,504 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:34, output treesize:21 [2020-10-19 18:26:48,543 INFO L350 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2020-10-19 18:26:48,544 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 23 [2020-10-19 18:26:48,545 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:48,553 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:48,554 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:48,554 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:40, output treesize:21 [2020-10-19 18:26:48,604 INFO L350 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2020-10-19 18:26:48,605 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 23 [2020-10-19 18:26:48,606 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:48,615 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:48,616 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:48,616 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:40, output treesize:21 [2020-10-19 18:26:48,644 INFO L350 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-10-19 18:26:48,644 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2020-10-19 18:26:48,645 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:48,655 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:48,657 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:48,658 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:40, output treesize:17 [2020-10-19 18:26:48,843 INFO L350 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-10-19 18:26:48,844 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2020-10-19 18:26:48,847 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:48,849 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:48,850 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:48,850 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:24, output treesize:3 [2020-10-19 18:26:48,878 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 72 proven. 19 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-19 18:26:48,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:26:48,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 22 [2020-10-19 18:26:48,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808753233] [2020-10-19 18:26:48,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-19 18:26:48,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:48,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-19 18:26:48,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2020-10-19 18:26:48,883 INFO L87 Difference]: Start difference. First operand 156 states and 177 transitions. Second operand 22 states. [2020-10-19 18:26:49,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:49,883 INFO L93 Difference]: Finished difference Result 161 states and 181 transitions. [2020-10-19 18:26:49,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-19 18:26:49,884 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 88 [2020-10-19 18:26:49,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:49,886 INFO L225 Difference]: With dead ends: 161 [2020-10-19 18:26:49,887 INFO L226 Difference]: Without dead ends: 161 [2020-10-19 18:26:49,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 87 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=143, Invalid=849, Unknown=0, NotChecked=0, Total=992 [2020-10-19 18:26:49,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-19 18:26:49,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 156. [2020-10-19 18:26:49,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-19 18:26:49,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 176 transitions. [2020-10-19 18:26:49,893 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 176 transitions. Word has length 88 [2020-10-19 18:26:49,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:49,893 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 176 transitions. [2020-10-19 18:26:49,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-19 18:26:49,894 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 176 transitions. [2020-10-19 18:26:49,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-19 18:26:49,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:49,895 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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 18:26:50,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:26:50,108 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, dll_createErr4REQUIRES_VIOLATION, dll_createErr9REQUIRES_VIOLATION, dll_createErr8REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr7REQUIRES_VIOLATION, dll_createErr6REQUIRES_VIOLATION, dll_createErr11REQUIRES_VIOLATION, dll_createErr10REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:26:50,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:50,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1744307152, now seen corresponding path program 1 times [2020-10-19 18:26:50,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:50,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360409259] [2020-10-19 18:26:50,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:50,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:50,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:26:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:50,541 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 74 proven. 11 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-10-19 18:26:50,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360409259] [2020-10-19 18:26:50,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392514755] [2020-10-19 18:26:50,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 18:26:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:50,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 49 conjunts are in the unsatisfiable core [2020-10-19 18:26:50,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:26:50,732 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 18:26:50,732 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:50,736 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:50,736 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:50,736 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:26:50,776 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:50,777 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 18:26:50,778 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:50,782 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:50,782 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:50,782 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:8 [2020-10-19 18:26:50,812 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 13 treesize of output 9 [2020-10-19 18:26:50,813 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:50,818 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:50,818 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:50,819 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2020-10-19 18:26:50,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:26:50,850 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-10-19 18:26:50,851 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:50,858 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:50,860 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 18:26:50,861 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:17 [2020-10-19 18:26:50,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:26:50,870 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2020-10-19 18:26:50,871 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:50,877 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:50,878 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:50,878 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:17 [2020-10-19 18:26:50,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:26:50,885 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2020-10-19 18:26:50,886 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:50,891 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:50,892 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:50,892 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:17 [2020-10-19 18:26:50,906 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 13 [2020-10-19 18:26:50,907 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:50,912 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:50,914 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:50,914 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:13 [2020-10-19 18:26:51,053 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-10-19 18:26:51,053 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:51,061 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:51,061 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 18:26:51,062 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-10-19 18:26:51,078 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 72 proven. 19 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-19 18:26:51,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:26:51,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 24 [2020-10-19 18:26:51,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819648159] [2020-10-19 18:26:51,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-19 18:26:51,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:51,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-19 18:26:51,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2020-10-19 18:26:51,082 INFO L87 Difference]: Start difference. First operand 156 states and 176 transitions. Second operand 24 states. [2020-10-19 18:26:52,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:52,142 INFO L93 Difference]: Finished difference Result 161 states and 180 transitions. [2020-10-19 18:26:52,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-19 18:26:52,146 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 90 [2020-10-19 18:26:52,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:52,147 INFO L225 Difference]: With dead ends: 161 [2020-10-19 18:26:52,147 INFO L226 Difference]: Without dead ends: 161 [2020-10-19 18:26:52,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=1086, Unknown=0, NotChecked=0, Total=1260 [2020-10-19 18:26:52,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-19 18:26:52,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 156. [2020-10-19 18:26:52,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-19 18:26:52,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 175 transitions. [2020-10-19 18:26:52,152 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 175 transitions. Word has length 90 [2020-10-19 18:26:52,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:52,153 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 175 transitions. [2020-10-19 18:26:52,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-19 18:26:52,153 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 175 transitions. [2020-10-19 18:26:52,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-19 18:26:52,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:52,154 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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 18:26:52,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-19 18:26:52,362 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, dll_createErr4REQUIRES_VIOLATION, dll_createErr9REQUIRES_VIOLATION, dll_createErr8REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr7REQUIRES_VIOLATION, dll_createErr6REQUIRES_VIOLATION, dll_createErr11REQUIRES_VIOLATION, dll_createErr10REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:26:52,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:52,362 INFO L82 PathProgramCache]: Analyzing trace with hash -724764429, now seen corresponding path program 1 times [2020-10-19 18:26:52,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:52,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434541836] [2020-10-19 18:26:52,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:52,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:52,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:26:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:52,679 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 74 proven. 11 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-10-19 18:26:52,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434541836] [2020-10-19 18:26:52,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987240112] [2020-10-19 18:26:52,680 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 18:26:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:52,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 46 conjunts are in the unsatisfiable core [2020-10-19 18:26:52,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:26:52,837 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 18:26:52,837 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:52,841 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:52,841 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:52,842 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:26:52,875 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:52,876 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 18:26:52,876 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:52,881 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:52,881 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:52,881 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:8 [2020-10-19 18:26:52,906 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 18:26:52,906 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:52,915 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:52,916 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:52,916 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2020-10-19 18:26:52,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:26:52,943 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-10-19 18:26:52,943 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:52,957 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:52,957 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:52,958 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:27 [2020-10-19 18:26:53,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:26:53,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:26:53,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:26:53,005 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 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 18:26:53,006 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:53,017 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:53,019 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 18:26:53,019 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:27 [2020-10-19 18:26:53,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:26:53,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:26:53,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:26:53,035 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2020-10-19 18:26:53,036 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:53,048 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:53,049 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:53,049 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:46, output treesize:27 [2020-10-19 18:26:53,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:26:53,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:26:53,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:26:53,063 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2020-10-19 18:26:53,064 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:53,078 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:53,079 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:53,079 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:46, output treesize:27 [2020-10-19 18:26:53,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:26:53,091 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 36 treesize of output 23 [2020-10-19 18:26:53,092 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:53,102 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:53,105 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:53,106 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:46, output treesize:23 [2020-10-19 18:26:53,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:26:53,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:26:53,389 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-19 18:26:53,396 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:53,397 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 24 treesize of output 13 [2020-10-19 18:26:53,398 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:53,413 INFO L625 ElimStorePlain]: treesize reduction 3, result has 81.3 percent of original size [2020-10-19 18:26:53,415 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:53,415 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:3 [2020-10-19 18:26:53,444 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 72 proven. 19 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-19 18:26:53,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:26:53,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 24 [2020-10-19 18:26:53,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333277151] [2020-10-19 18:26:53,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-19 18:26:53,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:53,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-19 18:26:53,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2020-10-19 18:26:53,447 INFO L87 Difference]: Start difference. First operand 156 states and 175 transitions. Second operand 24 states. [2020-10-19 18:26:56,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:56,195 INFO L93 Difference]: Finished difference Result 161 states and 179 transitions. [2020-10-19 18:26:56,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-19 18:26:56,195 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 91 [2020-10-19 18:26:56,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:56,196 INFO L225 Difference]: With dead ends: 161 [2020-10-19 18:26:56,197 INFO L226 Difference]: Without dead ends: 161 [2020-10-19 18:26:56,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 90 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=212, Invalid=1270, Unknown=0, NotChecked=0, Total=1482 [2020-10-19 18:26:56,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-19 18:26:56,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 156. [2020-10-19 18:26:56,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-19 18:26:56,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 174 transitions. [2020-10-19 18:26:56,208 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 174 transitions. Word has length 91 [2020-10-19 18:26:56,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:56,209 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 174 transitions. [2020-10-19 18:26:56,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-19 18:26:56,209 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 174 transitions. [2020-10-19 18:26:56,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-19 18:26:56,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:56,211 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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 18:26:56,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-19 18:26:56,424 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, dll_createErr4REQUIRES_VIOLATION, dll_createErr9REQUIRES_VIOLATION, dll_createErr8REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr7REQUIRES_VIOLATION, dll_createErr6REQUIRES_VIOLATION, dll_createErr11REQUIRES_VIOLATION, dll_createErr10REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:26:56,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:56,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1598496843, now seen corresponding path program 1 times [2020-10-19 18:26:56,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:56,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599836261] [2020-10-19 18:26:56,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:26:56,484 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:26:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:26:56,549 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:26:56,608 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:26:56,610 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:26:56,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-19 18:26:56,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:26:56 BoogieIcfgContainer [2020-10-19 18:26:56,686 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:26:56,687 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:26:56,687 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:26:56,687 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:26:56,688 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:26:38" (3/4) ... [2020-10-19 18:26:56,690 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 18:26:56,770 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:26:56,770 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:26:56,771 INFO L168 Benchmark]: Toolchain (without parser) took 19869.18 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 397.9 MB). Free memory was 960.0 MB in the beginning and 1.2 GB in the end (delta: -223.4 MB). Peak memory consumption was 174.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:26:56,772 INFO L168 Benchmark]: CDTParser took 0.26 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 18:26:56,772 INFO L168 Benchmark]: CACSL2BoogieTranslator took 653.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -147.8 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:26:56,772 INFO L168 Benchmark]: Boogie Preprocessor took 71.23 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:26:56,773 INFO L168 Benchmark]: RCFGBuilder took 748.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 58.2 MB). Peak memory consumption was 58.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:26:56,773 INFO L168 Benchmark]: TraceAbstraction took 18302.08 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 258.5 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -150.3 MB). Peak memory consumption was 108.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:26:56,773 INFO L168 Benchmark]: Witness Printer took 83.35 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:26:56,775 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 653.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -147.8 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 71.23 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 748.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 58.2 MB). Peak memory consumption was 58.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 18302.08 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 258.5 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -150.3 MB). Peak memory consumption was 108.2 MB. Max. memory is 11.5 GB. * Witness Printer took 83.35 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 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: [L599] const int len = 5; VAL [len=5] [L600] CALL, EXPR dll_create(len) VAL [\old(len)=5] [L579] DLL head = ((void *)0); VAL [\old(len)=5, head={0:0}, len=5] [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); VAL [\old(len)=5, head={0:0}, len=5, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={0:0}, len=5, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L585] new_head->data_0 = 0 VAL [\old(len)=5, head={0:0}, len=5, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L586] new_head->data_1 = 0 VAL [\old(len)=5, head={0:0}, len=5, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=5, __VERIFIER_nondet_int() == len? 1 : 0=1, head={0:0}, len=5, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=5, __VERIFIER_nondet_int() == len? 1 : 0=1, head={0:0}, len=5, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L588] new_head->next = head VAL [\old(len)=5, head={0:0}, len=5, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={0:0}, len=5, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L590] COND FALSE !(\read(head)) VAL [\old(len)=5, head={0:0}, len=5, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L593] head = new_head [L594] len-- VAL [\old(len)=5, head={-1:0}, len=4, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); VAL [\old(len)=5, head={-1:0}, len=4, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={-1:0}, len=4, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L585] new_head->data_0 = 0 VAL [\old(len)=5, head={-1:0}, len=4, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L586] new_head->data_1 = 0 VAL [\old(len)=5, head={-1:0}, len=4, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=4, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-1:0}, len=4, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=4, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-1:0}, len=4, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L588] new_head->next = head VAL [\old(len)=5, head={-1:0}, len=4, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={-1:0}, len=4, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L590] COND TRUE \read(head) VAL [\old(len)=5, head={-1:0}, len=4, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L591] head->prev = new_head VAL [\old(len)=5, head={-1:0}, len=4, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L593] head = new_head [L594] len-- VAL [\old(len)=5, head={-2:0}, len=3, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); VAL [\old(len)=5, head={-2:0}, len=3, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={-2:0}, len=3, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L585] new_head->data_0 = 0 VAL [\old(len)=5, head={-2:0}, len=3, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L586] new_head->data_1 = 0 VAL [\old(len)=5, head={-2:0}, len=3, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=3, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-2:0}, len=3, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=3, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-2:0}, len=3, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L588] new_head->next = head VAL [\old(len)=5, head={-2:0}, len=3, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={-2:0}, len=3, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L590] COND TRUE \read(head) VAL [\old(len)=5, head={-2:0}, len=3, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L591] head->prev = new_head VAL [\old(len)=5, head={-2:0}, len=3, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L593] head = new_head [L594] len-- VAL [\old(len)=5, head={-3:0}, len=2, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); VAL [\old(len)=5, head={-3:0}, len=2, malloc(sizeof(struct node))={-4:0}, new_head={-4:0}] [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={-3:0}, len=2, malloc(sizeof(struct node))={-4:0}, new_head={-4:0}] [L585] new_head->data_0 = 0 VAL [\old(len)=5, head={-3:0}, len=2, malloc(sizeof(struct node))={-4:0}, new_head={-4:0}] [L586] new_head->data_1 = 0 VAL [\old(len)=5, head={-3:0}, len=2, malloc(sizeof(struct node))={-4:0}, new_head={-4:0}] [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=2, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-3:0}, len=2, malloc(sizeof(struct node))={-4:0}, new_head={-4:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=2, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-3:0}, len=2, malloc(sizeof(struct node))={-4:0}, new_head={-4:0}] [L588] new_head->next = head VAL [\old(len)=5, head={-3:0}, len=2, malloc(sizeof(struct node))={-4:0}, new_head={-4:0}] [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={-3:0}, len=2, malloc(sizeof(struct node))={-4:0}, new_head={-4:0}] [L590] COND TRUE \read(head) VAL [\old(len)=5, head={-3:0}, len=2, malloc(sizeof(struct node))={-4:0}, new_head={-4:0}] [L591] head->prev = new_head VAL [\old(len)=5, head={-3:0}, len=2, malloc(sizeof(struct node))={-4:0}, new_head={-4:0}] [L593] head = new_head [L594] len-- VAL [\old(len)=5, head={-4:0}, len=1, malloc(sizeof(struct node))={-4:0}, new_head={-4:0}] [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); VAL [\old(len)=5, head={-4:0}, len=1, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={-4:0}, len=1, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L585] new_head->data_0 = 0 VAL [\old(len)=5, head={-4:0}, len=1, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L586] new_head->data_1 = 0 VAL [\old(len)=5, head={-4:0}, len=1, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=1, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-4:0}, len=1, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=1, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-4:0}, len=1, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L588] new_head->next = head VAL [\old(len)=5, head={-4:0}, len=1, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={-4:0}, len=1, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L590] COND TRUE \read(head) VAL [\old(len)=5, head={-4:0}, len=1, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L591] head->prev = new_head VAL [\old(len)=5, head={-4:0}, len=1, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L593] head = new_head [L594] len-- VAL [\old(len)=5, head={-5:0}, len=0, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L580] COND FALSE !(len > 0) VAL [\old(len)=5, head={-5:0}, len=0, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L596] return head; VAL [\old(len)=5, \result={-5:0}, head={-5:0}, len=0, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L600] RET, EXPR dll_create(len) VAL [dll_create(len)={-5:0}, len=5] [L600] DLL head = dll_create(len); [L601] head->next VAL [head={-5:0}, head->next={-4:0}, len=5] [L601] COND TRUE head->next [L602] EXPR head->data_0 VAL [head={-5:0}, head->data_0=0, len=5] [L602] EXPR 0 != head->data_0 || 0 != head->data_1 VAL [0 != head->data_0 || 0 != head->data_1=0, head={-5:0}, head->data_0=0, len=5] [L602] EXPR head->data_1 VAL [0 != head->data_0 || 0 != head->data_1=0, head={-5:0}, head->data_0=0, head->data_1=0, len=5] [L602] EXPR 0 != head->data_0 || 0 != head->data_1 VAL [0 != head->data_0 || 0 != head->data_1=0, head={-5:0}, head->data_0=0, head->data_1=0, len=5] [L602] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 VAL [0 != head->data_0 || 0 != head->data_1=0, 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2=0, head={-5:0}, head->data_0=0, head->data_1=0, len=5] [L602] EXPR head->data_2 VAL [0 != head->data_0 || 0 != head->data_1=0, 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2=0, head={-5:0}, head->data_0=0, head->data_1=0, head->data_2=1, len=5] [L602] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 VAL [0 != head->data_0 || 0 != head->data_1=0, 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2=1, head={-5:0}, head->data_0=0, head->data_1=0, head->data_2=1, len=5] [L602] COND TRUE 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L616] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "dll_nullified-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 111 locations, 35 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.1s, OverallIterations: 16, TraceHistogramMax: 5, AutomataDifference: 9.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1037 SDtfs, 1412 SDslu, 5091 SDs, 0 SdLazy, 5384 SolverSat, 291 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 734 GetRequests, 512 SyntacticMatches, 12 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=156occurred in iteration=11, 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, 15 MinimizatonAttempts, 172 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 1298 NumberOfCodeBlocks, 1298 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 1183 ConstructedInterpolants, 11 QuantifiedInterpolants, 381188 SizeOfPredicates, 79 NumberOfNonLiveVariables, 2738 ConjunctsInSsa, 179 ConjunctsInUnsatCore, 23 InterpolantComputations, 7 PerfectInterpolantSequences, 965/1339 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...