./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/test-0232_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-ext-properties/test-0232_1-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 86beb7e463e80bf4cd7303ba718fa4bc3c1db625 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-ext-properties/test-0232_1-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 86beb7e463e80bf4cd7303ba718fa4bc3c1db625 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:05:52,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:05:52,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:05:52,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:05:52,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:05:52,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:05:52,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:05:52,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:05:52,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:05:52,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:05:52,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:05:52,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:05:52,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:05:52,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:05:52,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:05:52,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:05:52,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:05:52,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:05:52,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:05:52,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:05:52,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:05:52,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:05:52,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:05:52,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:05:52,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:05:52,530 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:05:52,530 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:05:52,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:05:52,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:05:52,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:05:52,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:05:52,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:05:52,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:05:52,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:05:52,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:05:52,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:05:52,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:05:52,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:05:52,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:05:52,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:05:52,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:05:52,545 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 18:05:52,585 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:05:52,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:05:52,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:05:52,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:05:52,588 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:05:52,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:05:52,589 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:05:52,589 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:05:52,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:05:52,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:05:52,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:05:52,591 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:05:52,592 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:05:52,592 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:05:52,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:05:52,593 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:05:52,593 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:05:52,593 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:05:52,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:05:52,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:05:52,594 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:05:52,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:05:52,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:05:52,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:05:52,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:05:52,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:05:52,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:05:52,596 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:05:52,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86beb7e463e80bf4cd7303ba718fa4bc3c1db625 [2020-10-19 18:05:52,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:05:52,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:05:52,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:05:52,922 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:05:52,922 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:05:52,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/test-0232_1-1.i [2020-10-19 18:05:52,987 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9531db3aa/98702ce131b84458bc846eaac4bf9e1f/FLAG50fb16a69 [2020-10-19 18:05:53,479 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:05:53,480 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/test-0232_1-1.i [2020-10-19 18:05:53,499 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9531db3aa/98702ce131b84458bc846eaac4bf9e1f/FLAG50fb16a69 [2020-10-19 18:05:53,817 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9531db3aa/98702ce131b84458bc846eaac4bf9e1f [2020-10-19 18:05:53,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:05:53,826 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:05:53,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:05:53,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:05:53,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:05:53,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:05:53" (1/1) ... [2020-10-19 18:05:53,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64c083c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:53, skipping insertion in model container [2020-10-19 18:05:53,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:05:53" (1/1) ... [2020-10-19 18:05:53,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:05:53,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:05:54,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:05:54,359 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:05:54,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:05:54,461 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:05:54,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:54 WrapperNode [2020-10-19 18:05:54,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:05:54,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:05:54,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:05:54,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:05:54,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:54" (1/1) ... [2020-10-19 18:05:54,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:54" (1/1) ... [2020-10-19 18:05:54,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:54" (1/1) ... [2020-10-19 18:05:54,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:54" (1/1) ... [2020-10-19 18:05:54,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:54" (1/1) ... [2020-10-19 18:05:54,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:54" (1/1) ... [2020-10-19 18:05:54,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:54" (1/1) ... [2020-10-19 18:05:54,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:05:54,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:05:54,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:05:54,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:05:54,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:05:54,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:05:54,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:05:54,611 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:05:54,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 18:05:54,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 18:05:54,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 18:05:54,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 18:05:54,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 18:05:54,612 INFO L138 BoogieDeclarations]: Found implementation of procedure append [2020-10-19 18:05:54,612 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:05:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:05:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:05:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-19 18:05:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-19 18:05:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:05:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:05:54,614 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:05:54,614 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:05:54,614 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:05:54,614 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:05:54,615 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:05:54,615 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:05:54,615 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:05:54,615 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:05:54,616 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:05:54,616 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:05:54,616 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:05:54,616 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:05:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:05:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:05:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:05:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:05:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 18:05:54,618 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 18:05:54,618 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 18:05:54,618 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 18:05:54,618 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 18:05:54,618 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:05:54,619 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:05:54,619 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:05:54,619 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:05:54,619 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:05:54,620 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:05:54,620 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:05:54,620 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:05:54,620 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:05:54,620 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:05:54,621 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:05:54,621 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:05:54,621 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:05:54,621 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:05:54,621 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:05:54,622 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:05:54,622 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:05:54,622 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:05:54,622 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:05:54,623 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:05:54,623 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:05:54,623 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:05:54,623 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:05:54,623 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:05:54,624 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:05:54,624 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:05:54,624 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:05:54,624 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:05:54,624 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:05:54,625 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:05:54,625 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:05:54,625 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:05:54,625 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:05:54,625 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:05:54,626 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:05:54,626 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:05:54,626 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:05:54,626 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:05:54,627 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:05:54,627 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:05:54,627 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:05:54,627 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:05:54,627 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:05:54,628 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:05:54,628 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:05:54,629 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:05:54,629 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:05:54,629 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:05:54,629 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:05:54,629 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:05:54,630 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:05:54,630 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:05:54,630 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:05:54,630 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:05:54,631 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:05:54,631 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:05:54,631 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:05:54,631 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:05:54,631 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:05:54,632 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:05:54,632 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:05:54,632 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:05:54,632 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:05:54,633 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:05:54,633 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:05:54,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:05:54,633 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:05:54,633 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:05:54,634 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:05:54,634 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:05:54,634 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:05:54,634 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:05:54,634 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:05:54,635 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:05:54,635 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:05:54,635 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:05:54,635 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:05:54,635 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:05:54,636 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:05:54,636 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:05:54,636 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:05:54,636 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:05:54,636 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:05:54,637 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:05:54,637 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:05:54,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:05:54,637 INFO L130 BoogieDeclarations]: Found specification of procedure append [2020-10-19 18:05:54,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:05:54,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:05:54,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:05:54,638 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:05:54,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-19 18:05:54,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:05:54,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:05:54,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:05:54,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:05:54,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:05:54,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:05:55,338 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:05:55,338 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-19 18:05:55,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:05:55 BoogieIcfgContainer [2020-10-19 18:05:55,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:05:55,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:05:55,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:05:55,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:05:55,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:05:53" (1/3) ... [2020-10-19 18:05:55,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257a0a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:05:55, skipping insertion in model container [2020-10-19 18:05:55,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:54" (2/3) ... [2020-10-19 18:05:55,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257a0a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:05:55, skipping insertion in model container [2020-10-19 18:05:55,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:05:55" (3/3) ... [2020-10-19 18:05:55,362 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0232_1-1.i [2020-10-19 18:05:55,374 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:05:55,383 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 45 error locations. [2020-10-19 18:05:55,393 INFO L253 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2020-10-19 18:05:55,414 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:05:55,414 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:05:55,414 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:05:55,414 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:05:55,414 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:05:55,415 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:05:55,415 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:05:55,415 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:05:55,436 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2020-10-19 18:05:55,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:05:55,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:55,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:55,447 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:05:55,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:55,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1863992736, now seen corresponding path program 1 times [2020-10-19 18:05:55,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:55,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199959210] [2020-10-19 18:05:55,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:55,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:55,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:55,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:55,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199959210] [2020-10-19 18:05:55,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:55,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:05:55,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050269337] [2020-10-19 18:05:55,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:05:55,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:55,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:05:55,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:05:55,782 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 6 states. [2020-10-19 18:05:56,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:56,165 INFO L93 Difference]: Finished difference Result 95 states and 99 transitions. [2020-10-19 18:05:56,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:05:56,167 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-19 18:05:56,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:56,178 INFO L225 Difference]: With dead ends: 95 [2020-10-19 18:05:56,178 INFO L226 Difference]: Without dead ends: 92 [2020-10-19 18:05:56,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:05:56,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-19 18:05:56,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-19 18:05:56,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-19 18:05:56,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 96 transitions. [2020-10-19 18:05:56,229 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 96 transitions. Word has length 9 [2020-10-19 18:05:56,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:56,229 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 96 transitions. [2020-10-19 18:05:56,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:05:56,229 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 96 transitions. [2020-10-19 18:05:56,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:05:56,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:56,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:56,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:05:56,231 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:05:56,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:56,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1863992737, now seen corresponding path program 1 times [2020-10-19 18:05:56,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:56,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662576979] [2020-10-19 18:05:56,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:56,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:56,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:56,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662576979] [2020-10-19 18:05:56,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:56,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:05:56,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395058676] [2020-10-19 18:05:56,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:05:56,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:56,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:05:56,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:05:56,380 INFO L87 Difference]: Start difference. First operand 91 states and 96 transitions. Second operand 6 states. [2020-10-19 18:05:56,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:56,781 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2020-10-19 18:05:56,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:05:56,782 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-19 18:05:56,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:56,786 INFO L225 Difference]: With dead ends: 121 [2020-10-19 18:05:56,786 INFO L226 Difference]: Without dead ends: 121 [2020-10-19 18:05:56,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:05:56,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-19 18:05:56,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 100. [2020-10-19 18:05:56,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-19 18:05:56,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 111 transitions. [2020-10-19 18:05:56,800 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 111 transitions. Word has length 9 [2020-10-19 18:05:56,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:56,800 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 111 transitions. [2020-10-19 18:05:56,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:05:56,801 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 111 transitions. [2020-10-19 18:05:56,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 18:05:56,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:56,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:56,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:05:56,802 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:05:56,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:56,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1949200060, now seen corresponding path program 1 times [2020-10-19 18:05:56,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:56,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116634852] [2020-10-19 18:05:56,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:56,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:56,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:56,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116634852] [2020-10-19 18:05:56,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:56,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:05:56,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62330138] [2020-10-19 18:05:56,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:05:56,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:56,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:05:56,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:05:56,910 INFO L87 Difference]: Start difference. First operand 100 states and 111 transitions. Second operand 4 states. [2020-10-19 18:05:57,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:57,094 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2020-10-19 18:05:57,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:05:57,095 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-19 18:05:57,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:57,097 INFO L225 Difference]: With dead ends: 96 [2020-10-19 18:05:57,097 INFO L226 Difference]: Without dead ends: 96 [2020-10-19 18:05:57,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:05:57,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-19 18:05:57,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-19 18:05:57,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-19 18:05:57,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 106 transitions. [2020-10-19 18:05:57,107 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 106 transitions. Word has length 10 [2020-10-19 18:05:57,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:57,107 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 106 transitions. [2020-10-19 18:05:57,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:05:57,108 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 106 transitions. [2020-10-19 18:05:57,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 18:05:57,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:57,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:57,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:05:57,110 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:05:57,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:57,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1949200061, now seen corresponding path program 1 times [2020-10-19 18:05:57,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:57,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229746118] [2020-10-19 18:05:57,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:57,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:57,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:57,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229746118] [2020-10-19 18:05:57,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:57,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:05:57,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004136909] [2020-10-19 18:05:57,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:05:57,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:57,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:05:57,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:05:57,186 INFO L87 Difference]: Start difference. First operand 96 states and 106 transitions. Second operand 4 states. [2020-10-19 18:05:57,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:57,345 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2020-10-19 18:05:57,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:05:57,345 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-19 18:05:57,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:57,347 INFO L225 Difference]: With dead ends: 92 [2020-10-19 18:05:57,347 INFO L226 Difference]: Without dead ends: 92 [2020-10-19 18:05:57,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:05:57,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-19 18:05:57,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-10-19 18:05:57,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-19 18:05:57,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2020-10-19 18:05:57,355 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 10 [2020-10-19 18:05:57,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:57,356 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2020-10-19 18:05:57,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:05:57,356 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2020-10-19 18:05:57,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 18:05:57,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:57,357 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:57,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:05:57,358 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:05:57,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:57,358 INFO L82 PathProgramCache]: Analyzing trace with hash -203601109, now seen corresponding path program 1 times [2020-10-19 18:05:57,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:57,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406084538] [2020-10-19 18:05:57,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:57,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:57,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:57,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:57,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406084538] [2020-10-19 18:05:57,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:57,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-19 18:05:57,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259873561] [2020-10-19 18:05:57,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:05:57,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:57,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:05:57,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:05:57,527 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand 9 states. [2020-10-19 18:05:57,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:57,932 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2020-10-19 18:05:57,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-19 18:05:57,933 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-19 18:05:57,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:57,934 INFO L225 Difference]: With dead ends: 103 [2020-10-19 18:05:57,934 INFO L226 Difference]: Without dead ends: 103 [2020-10-19 18:05:57,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-19 18:05:57,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-19 18:05:57,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2020-10-19 18:05:57,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-19 18:05:57,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2020-10-19 18:05:57,945 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 15 [2020-10-19 18:05:57,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:57,946 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2020-10-19 18:05:57,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:05:57,946 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2020-10-19 18:05:57,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 18:05:57,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:57,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:57,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:05:57,948 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:05:57,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:57,948 INFO L82 PathProgramCache]: Analyzing trace with hash -2016388927, now seen corresponding path program 1 times [2020-10-19 18:05:57,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:57,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337469665] [2020-10-19 18:05:57,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:58,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:58,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:58,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337469665] [2020-10-19 18:05:58,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:58,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 18:05:58,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027368738] [2020-10-19 18:05:58,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:05:58,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:58,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:05:58,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:05:58,063 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand 8 states. [2020-10-19 18:05:58,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:58,271 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2020-10-19 18:05:58,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:05:58,271 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-10-19 18:05:58,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:58,273 INFO L225 Difference]: With dead ends: 98 [2020-10-19 18:05:58,273 INFO L226 Difference]: Without dead ends: 98 [2020-10-19 18:05:58,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:05:58,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-19 18:05:58,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 95. [2020-10-19 18:05:58,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-19 18:05:58,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2020-10-19 18:05:58,280 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 16 [2020-10-19 18:05:58,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:58,281 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2020-10-19 18:05:58,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:05:58,281 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2020-10-19 18:05:58,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 18:05:58,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:58,282 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] [2020-10-19 18:05:58,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 18:05:58,282 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:05:58,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:58,283 INFO L82 PathProgramCache]: Analyzing trace with hash 198096205, now seen corresponding path program 1 times [2020-10-19 18:05:58,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:58,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013084211] [2020-10-19 18:05:58,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:58,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:58,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:05:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:58,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:58,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013084211] [2020-10-19 18:05:58,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:58,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:05:58,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318354633] [2020-10-19 18:05:58,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:05:58,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:58,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:05:58,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:05:58,488 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand 9 states. [2020-10-19 18:05:58,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:58,884 INFO L93 Difference]: Finished difference Result 111 states and 117 transitions. [2020-10-19 18:05:58,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:05:58,884 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-19 18:05:58,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:58,885 INFO L225 Difference]: With dead ends: 111 [2020-10-19 18:05:58,885 INFO L226 Difference]: Without dead ends: 111 [2020-10-19 18:05:58,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:05:58,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-19 18:05:58,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 95. [2020-10-19 18:05:58,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-19 18:05:58,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2020-10-19 18:05:58,892 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 25 [2020-10-19 18:05:58,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:58,894 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2020-10-19 18:05:58,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:05:58,894 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2020-10-19 18:05:58,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 18:05:58,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:58,895 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] [2020-10-19 18:05:58,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 18:05:58,896 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:05:58,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:58,896 INFO L82 PathProgramCache]: Analyzing trace with hash 198096206, now seen corresponding path program 1 times [2020-10-19 18:05:58,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:58,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825799575] [2020-10-19 18:05:58,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:58,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:58,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:05:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:59,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:59,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825799575] [2020-10-19 18:05:59,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:59,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:05:59,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257348891] [2020-10-19 18:05:59,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:05:59,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:59,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:05:59,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:05:59,071 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand 9 states. [2020-10-19 18:05:59,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:59,457 INFO L93 Difference]: Finished difference Result 106 states and 112 transitions. [2020-10-19 18:05:59,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:05:59,458 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-19 18:05:59,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:59,459 INFO L225 Difference]: With dead ends: 106 [2020-10-19 18:05:59,459 INFO L226 Difference]: Without dead ends: 106 [2020-10-19 18:05:59,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:05:59,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-19 18:05:59,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 94. [2020-10-19 18:05:59,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-19 18:05:59,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 102 transitions. [2020-10-19 18:05:59,466 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 102 transitions. Word has length 25 [2020-10-19 18:05:59,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:59,466 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 102 transitions. [2020-10-19 18:05:59,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:05:59,466 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 102 transitions. [2020-10-19 18:05:59,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 18:05:59,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:59,467 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] [2020-10-19 18:05:59,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 18:05:59,468 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:05:59,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:59,468 INFO L82 PathProgramCache]: Analyzing trace with hash 198082271, now seen corresponding path program 1 times [2020-10-19 18:05:59,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:59,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135309665] [2020-10-19 18:05:59,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:59,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:59,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:05:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:59,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:59,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135309665] [2020-10-19 18:05:59,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:59,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:05:59,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176376644] [2020-10-19 18:05:59,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:05:59,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:59,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:05:59,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:05:59,542 INFO L87 Difference]: Start difference. First operand 94 states and 102 transitions. Second operand 5 states. [2020-10-19 18:05:59,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:59,686 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2020-10-19 18:05:59,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:05:59,686 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-19 18:05:59,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:59,687 INFO L225 Difference]: With dead ends: 76 [2020-10-19 18:05:59,688 INFO L226 Difference]: Without dead ends: 76 [2020-10-19 18:05:59,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:05:59,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-19 18:05:59,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-19 18:05:59,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-19 18:05:59,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2020-10-19 18:05:59,692 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 25 [2020-10-19 18:05:59,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:59,692 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2020-10-19 18:05:59,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:05:59,692 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2020-10-19 18:05:59,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 18:05:59,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:59,693 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] [2020-10-19 18:05:59,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 18:05:59,694 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:05:59,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:59,694 INFO L82 PathProgramCache]: Analyzing trace with hash 199318401, now seen corresponding path program 1 times [2020-10-19 18:05:59,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:59,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80663093] [2020-10-19 18:05:59,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:59,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:59,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:05:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:59,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:59,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80663093] [2020-10-19 18:05:59,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:59,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:05:59,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483321498] [2020-10-19 18:05:59,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:05:59,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:59,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:05:59,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:05:59,776 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand 6 states. [2020-10-19 18:05:59,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:59,950 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2020-10-19 18:05:59,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:05:59,951 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-19 18:05:59,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:59,952 INFO L225 Difference]: With dead ends: 72 [2020-10-19 18:05:59,952 INFO L226 Difference]: Without dead ends: 72 [2020-10-19 18:05:59,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:05:59,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-19 18:05:59,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-19 18:05:59,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-19 18:05:59,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2020-10-19 18:05:59,959 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 25 [2020-10-19 18:05:59,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:59,960 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2020-10-19 18:05:59,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:05:59,960 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2020-10-19 18:05:59,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 18:05:59,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:59,965 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, 1, 1] [2020-10-19 18:05:59,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 18:05:59,966 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:05:59,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:59,968 INFO L82 PathProgramCache]: Analyzing trace with hash 199008275, now seen corresponding path program 1 times [2020-10-19 18:05:59,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:59,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335876270] [2020-10-19 18:05:59,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:00,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:06:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:00,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:06:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:00,132 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 18:06:00,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335876270] [2020-10-19 18:06:00,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:06:00,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 18:06:00,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947329772] [2020-10-19 18:06:00,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:06:00,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:06:00,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:06:00,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:06:00,135 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand 8 states. [2020-10-19 18:06:00,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:06:00,432 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2020-10-19 18:06:00,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:06:00,433 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-19 18:06:00,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:06:00,434 INFO L225 Difference]: With dead ends: 70 [2020-10-19 18:06:00,434 INFO L226 Difference]: Without dead ends: 70 [2020-10-19 18:06:00,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:06:00,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-19 18:06:00,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-10-19 18:06:00,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-19 18:06:00,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2020-10-19 18:06:00,437 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 28 [2020-10-19 18:06:00,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:06:00,438 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2020-10-19 18:06:00,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:06:00,438 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2020-10-19 18:06:00,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-19 18:06:00,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:06:00,439 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, 1, 1, 1] [2020-10-19 18:06:00,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 18:06:00,439 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:06:00,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:06:00,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1874289326, now seen corresponding path program 1 times [2020-10-19 18:06:00,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:06:00,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533546430] [2020-10-19 18:06:00,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:06:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:00,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:06:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:00,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:06:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:00,560 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 18:06:00,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533546430] [2020-10-19 18:06:00,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:06:00,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 18:06:00,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147582254] [2020-10-19 18:06:00,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:06:00,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:06:00,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:06:00,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:06:00,562 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand 8 states. [2020-10-19 18:06:00,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:06:00,851 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2020-10-19 18:06:00,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:06:00,851 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-10-19 18:06:00,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:06:00,852 INFO L225 Difference]: With dead ends: 69 [2020-10-19 18:06:00,852 INFO L226 Difference]: Without dead ends: 69 [2020-10-19 18:06:00,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:06:00,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-19 18:06:00,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-19 18:06:00,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-19 18:06:00,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2020-10-19 18:06:00,856 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 29 [2020-10-19 18:06:00,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:06:00,857 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2020-10-19 18:06:00,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:06:00,857 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2020-10-19 18:06:00,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 18:06:00,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:06:00,858 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:06:00,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-19 18:06:00,858 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:06:00,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:06:00,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1280977847, now seen corresponding path program 1 times [2020-10-19 18:06:00,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:06:00,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001663564] [2020-10-19 18:06:00,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:06:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:00,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:06:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:00,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:06:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:01,042 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:06:01,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001663564] [2020-10-19 18:06:01,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739203062] [2020-10-19 18:06:01,043 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 18:06:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:01,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 41 conjunts are in the unsatisfiable core [2020-10-19 18:06:01,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:06:01,305 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 18:06:01,306 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:01,315 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:01,315 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:06:01,316 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-19 18:06:01,364 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:01,365 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 18:06:01,366 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:01,370 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:01,371 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:06:01,371 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:7 [2020-10-19 18:06:01,383 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:06:01,383 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:01,388 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:01,389 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 18:06:01,389 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:9 [2020-10-19 18:06:01,491 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:01,491 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 16 treesize of output 44 [2020-10-19 18:06:01,493 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:01,513 INFO L625 ElimStorePlain]: treesize reduction 26, result has 44.7 percent of original size [2020-10-19 18:06:01,515 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 18:06:01,516 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:21 [2020-10-19 18:06:01,630 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-19 18:06:01,653 INFO L350 Elim1Store]: treesize reduction 48, result has 27.3 percent of original size [2020-10-19 18:06:01,654 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 30 [2020-10-19 18:06:01,655 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:01,678 INFO L625 ElimStorePlain]: treesize reduction 11, result has 76.1 percent of original size [2020-10-19 18:06:01,682 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-19 18:06:01,683 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:39, output treesize:32 [2020-10-19 18:06:01,758 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:01,758 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 28 treesize of output 24 [2020-10-19 18:06:01,759 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:01,767 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:01,769 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:06:01,770 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:39, output treesize:11 [2020-10-19 18:06:01,787 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:06:01,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:06:01,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 18 [2020-10-19 18:06:01,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344164362] [2020-10-19 18:06:01,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-19 18:06:01,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:06:01,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-19 18:06:01,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-10-19 18:06:01,790 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand 19 states. [2020-10-19 18:06:03,897 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2020-10-19 18:06:05,572 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2020-10-19 18:06:08,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:06:08,411 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2020-10-19 18:06:08,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-19 18:06:08,412 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 30 [2020-10-19 18:06:08,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:06:08,413 INFO L225 Difference]: With dead ends: 75 [2020-10-19 18:06:08,413 INFO L226 Difference]: Without dead ends: 75 [2020-10-19 18:06:08,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=157, Invalid=712, Unknown=1, NotChecked=0, Total=870 [2020-10-19 18:06:08,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-19 18:06:08,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2020-10-19 18:06:08,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-19 18:06:08,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2020-10-19 18:06:08,422 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 30 [2020-10-19 18:06:08,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:06:08,423 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2020-10-19 18:06:08,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-19 18:06:08,423 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2020-10-19 18:06:08,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 18:06:08,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:06:08,426 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:06:08,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-19 18:06:08,630 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:06:08,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:06:08,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1280977846, now seen corresponding path program 1 times [2020-10-19 18:06:08,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:06:08,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575519771] [2020-10-19 18:06:08,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:06:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:08,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:06:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:08,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:06:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:08,884 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:06:08,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575519771] [2020-10-19 18:06:08,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523472237] [2020-10-19 18:06:08,885 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 18:06:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:09,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 44 conjunts are in the unsatisfiable core [2020-10-19 18:06:09,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:06:09,044 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 18:06:09,044 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:09,050 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:09,051 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:06:09,051 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-19 18:06:09,151 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:09,151 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 18:06:09,152 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:09,182 INFO L625 ElimStorePlain]: treesize reduction 14, result has 62.2 percent of original size [2020-10-19 18:06:09,184 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 18:06:09,184 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:23 [2020-10-19 18:06:09,317 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:06:09,317 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:09,329 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:09,332 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:06:09,333 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:09,344 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:09,348 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:06:09,349 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:44, output treesize:38 [2020-10-19 18:06:09,522 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:09,522 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 31 treesize of output 53 [2020-10-19 18:06:09,523 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:09,556 INFO L625 ElimStorePlain]: treesize reduction 26, result has 59.4 percent of original size [2020-10-19 18:06:09,558 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 18:06:09,559 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:47, output treesize:38 [2020-10-19 18:06:09,697 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-19 18:06:09,708 INFO L350 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2020-10-19 18:06:09,709 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 20 [2020-10-19 18:06:09,709 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:09,735 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:09,740 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-19 18:06:09,755 INFO L350 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2020-10-19 18:06:09,755 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 21 [2020-10-19 18:06:09,756 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:09,773 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:09,776 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-19 18:06:09,777 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:68, output treesize:57 [2020-10-19 18:06:09,901 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:09,902 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 28 treesize of output 24 [2020-10-19 18:06:09,902 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:09,918 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:09,926 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:09,927 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 33 treesize of output 25 [2020-10-19 18:06:09,927 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:09,937 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:09,939 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:06:09,939 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:71, output treesize:17 [2020-10-19 18:06:09,962 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:06:09,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:06:09,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 21 [2020-10-19 18:06:09,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403206829] [2020-10-19 18:06:09,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-19 18:06:09,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:06:09,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-19 18:06:09,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2020-10-19 18:06:09,965 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 22 states. [2020-10-19 18:06:11,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:06:11,083 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2020-10-19 18:06:11,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-19 18:06:11,084 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 30 [2020-10-19 18:06:11,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:06:11,085 INFO L225 Difference]: With dead ends: 74 [2020-10-19 18:06:11,085 INFO L226 Difference]: Without dead ends: 74 [2020-10-19 18:06:11,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=173, Invalid=757, Unknown=0, NotChecked=0, Total=930 [2020-10-19 18:06:11,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-19 18:06:11,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2020-10-19 18:06:11,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-19 18:06:11,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2020-10-19 18:06:11,090 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 30 [2020-10-19 18:06:11,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:06:11,091 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2020-10-19 18:06:11,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-19 18:06:11,091 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2020-10-19 18:06:11,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 18:06:11,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:06:11,092 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, 1, 1, 1, 1] [2020-10-19 18:06:11,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-19 18:06:11,298 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:06:11,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:06:11,298 INFO L82 PathProgramCache]: Analyzing trace with hash -2026572939, now seen corresponding path program 1 times [2020-10-19 18:06:11,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:06:11,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188587913] [2020-10-19 18:06:11,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:06:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:11,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:06:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:11,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:06:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:11,373 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 18:06:11,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188587913] [2020-10-19 18:06:11,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:06:11,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:06:11,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129601092] [2020-10-19 18:06:11,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:06:11,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:06:11,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:06:11,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:06:11,376 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand 7 states. [2020-10-19 18:06:11,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:06:11,579 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions. [2020-10-19 18:06:11,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:06:11,579 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-10-19 18:06:11,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:06:11,580 INFO L225 Difference]: With dead ends: 71 [2020-10-19 18:06:11,580 INFO L226 Difference]: Without dead ends: 71 [2020-10-19 18:06:11,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:06:11,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-19 18:06:11,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-10-19 18:06:11,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-19 18:06:11,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2020-10-19 18:06:11,588 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 30 [2020-10-19 18:06:11,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:06:11,589 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2020-10-19 18:06:11,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:06:11,589 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2020-10-19 18:06:11,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-19 18:06:11,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:06:11,592 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, 1, 1, 1, 1, 1] [2020-10-19 18:06:11,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-19 18:06:11,594 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:06:11,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:06:11,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1600748433, now seen corresponding path program 1 times [2020-10-19 18:06:11,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:06:11,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794805863] [2020-10-19 18:06:11,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:06:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:11,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:06:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:11,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:06:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:11,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:06:11,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794805863] [2020-10-19 18:06:11,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:06:11,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:06:11,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947071955] [2020-10-19 18:06:11,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:06:11,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:06:11,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:06:11,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:06:11,830 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 9 states. [2020-10-19 18:06:12,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:06:12,091 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-10-19 18:06:12,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:06:12,092 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-10-19 18:06:12,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:06:12,092 INFO L225 Difference]: With dead ends: 70 [2020-10-19 18:06:12,093 INFO L226 Difference]: Without dead ends: 70 [2020-10-19 18:06:12,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:06:12,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-19 18:06:12,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-10-19 18:06:12,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-19 18:06:12,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2020-10-19 18:06:12,097 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 31 [2020-10-19 18:06:12,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:06:12,098 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2020-10-19 18:06:12,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:06:12,098 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2020-10-19 18:06:12,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-19 18:06:12,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:06:12,100 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, 1, 1, 1, 1, 1] [2020-10-19 18:06:12,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-19 18:06:12,100 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:06:12,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:06:12,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1600748434, now seen corresponding path program 1 times [2020-10-19 18:06:12,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:06:12,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527360705] [2020-10-19 18:06:12,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:06:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:12,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:06:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:12,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:06:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:12,183 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 18:06:12,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527360705] [2020-10-19 18:06:12,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:06:12,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:06:12,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691413558] [2020-10-19 18:06:12,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:06:12,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:06:12,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:06:12,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:06:12,186 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand 6 states. [2020-10-19 18:06:12,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:06:12,373 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2020-10-19 18:06:12,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:06:12,374 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-19 18:06:12,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:06:12,375 INFO L225 Difference]: With dead ends: 66 [2020-10-19 18:06:12,375 INFO L226 Difference]: Without dead ends: 66 [2020-10-19 18:06:12,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:06:12,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-19 18:06:12,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-19 18:06:12,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-19 18:06:12,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2020-10-19 18:06:12,385 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 31 [2020-10-19 18:06:12,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:06:12,386 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2020-10-19 18:06:12,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:06:12,386 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2020-10-19 18:06:12,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-19 18:06:12,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:06:12,388 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:06:12,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-19 18:06:12,389 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:06:12,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:06:12,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1346610171, now seen corresponding path program 1 times [2020-10-19 18:06:12,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:06:12,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199031625] [2020-10-19 18:06:12,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:06:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:06:12,442 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:06:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:06:12,483 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:06:12,532 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:06:12,532 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:06:12,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-19 18:06:12,588 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-10-19 18:06:12,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:06:12 BoogieIcfgContainer [2020-10-19 18:06:12,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:06:12,631 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:06:12,631 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:06:12,632 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:06:12,632 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:05:55" (3/4) ... [2020-10-19 18:06:12,637 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:06:12,638 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:06:12,639 INFO L168 Benchmark]: Toolchain (without parser) took 18818.33 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 319.8 MB). Free memory was 950.6 MB in the beginning and 882.3 MB in the end (delta: 68.3 MB). Peak memory consumption was 388.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:06:12,640 INFO L168 Benchmark]: CDTParser took 0.30 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 18:06:12,641 INFO L168 Benchmark]: CACSL2BoogieTranslator took 634.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -154.9 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:06:12,641 INFO L168 Benchmark]: Boogie Preprocessor took 76.23 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 18:06:12,641 INFO L168 Benchmark]: RCFGBuilder took 802.99 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: 64.3 MB). Peak memory consumption was 64.3 MB. Max. memory is 11.5 GB. [2020-10-19 18:06:12,642 INFO L168 Benchmark]: TraceAbstraction took 17286.80 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 188.7 MB). Free memory was 1.0 GB in the beginning and 882.3 MB in the end (delta: 158.8 MB). Peak memory consumption was 347.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:06:12,642 INFO L168 Benchmark]: Witness Printer took 6.62 ms. Allocated memory is still 1.3 GB. Free memory is still 882.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:06:12,645 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 634.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -154.9 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 76.23 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 802.99 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: 64.3 MB). Peak memory consumption was 64.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 17286.80 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 188.7 MB). Free memory was 1.0 GB in the beginning and 882.3 MB in the end (delta: 158.8 MB). Peak memory consumption was 347.6 MB. Max. memory is 11.5 GB. * Witness Printer took 6.62 ms. Allocated memory is still 1.3 GB. Free memory is still 882.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 539]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 539. Possible FailurePath: [L524] int c = 0; VAL [\old(c)=55, c=0] [L541] struct item *list = ((void *)0); [L542] int length = 0; VAL [\old(c)=0, c=0, length=0, list={3:0}] [L544] CALL append(&list) VAL [\old(c)=0, c=0, plist={3:0}] [L531] c++ [L532] struct item *item = malloc(sizeof *item); VAL [\old(c)=0, c=1, item={1:0}, malloc(sizeof *item)={1:0}, plist={3:0}, plist={3:0}] [L533] EXPR \read(**plist) VAL [\old(c)=0, \read(**plist)={0:0}, c=1, item={1:0}, malloc(sizeof *item)={1:0}, plist={3:0}, plist={3:0}] [L533] item->next = *plist VAL [\old(c)=0, \read(**plist)={0:0}, c=1, item={1:0}, malloc(sizeof *item)={1:0}, plist={3:0}, plist={3:0}] [L534] EXPR item->next VAL [\old(c)=0, c=1, item={1:0}, item->next={0:0}, malloc(sizeof *item)={1:0}, plist={3:0}, plist={3:0}] [L534-L536] EXPR (item->next) ? item->next->data : malloc(sizeof *item) [L534-L536] EXPR (item->next) ? item->next->data : malloc(sizeof *item) VAL [(item->next) ? item->next->data : malloc(sizeof *item)={-1:0}, \old(c)=0, c=1, item={1:0}, item->next={0:0}, malloc(sizeof *item)={-1:0}, malloc(sizeof *item)={1:0}, plist={3:0}, plist={3:0}] [L534-L536] item->data = (item->next) ? item->next->data : malloc(sizeof *item) VAL [(item->next) ? item->next->data : malloc(sizeof *item)={-1:0}, \old(c)=0, c=1, item={1:0}, item->next={0:0}, malloc(sizeof *item)={-1:0}, malloc(sizeof *item)={1:0}, plist={3:0}, plist={3:0}] [L537] *plist = item VAL [\old(c)=0, c=1, item={1:0}, malloc(sizeof *item)={-1:0}, malloc(sizeof *item)={1:0}, plist={3:0}, plist={3:0}] [L544] RET append(&list) VAL [\old(c)=0, c=1, length=0, list={3:0}] [L545] length++ VAL [\old(c)=0, c=1, length=1, list={3:0}] [L546] COND FALSE !(__VERIFIER_nondet_int() && c < 20) [L547] COND TRUE length > 0 VAL [\old(c)=0, c=1, length=1, list={3:0}] [L548] COND FALSE !(length < 0) VAL [\old(c)=0, c=1, length=1, list={3:0}] [L551] EXPR \read(*list) VAL [\old(c)=0, \read(*list)={1:0}, c=1, length=1, list={3:0}] [L551] EXPR list->next VAL [\old(c)=0, \read(*list)={1:0}, c=1, length=1, list={3:0}, list->next={0:0}] [L551] struct item *next = list->next; [L552] EXPR \read(*list) VAL [\old(c)=0, \read(*list)={1:0}, c=1, length=1, list={3:0}, next={0:0}] [L552] free(list) VAL [\old(c)=0, \read(*list)={1:0}, c=1, length=1, list={3:0}, next={0:0}] [L552] free(list) VAL [\old(c)=0, \read(*list)={1:0}, c=1, length=1, list={3:0}, next={0:0}] [L552] free(list) [L553] list = next VAL [\old(c)=0, c=1, length=1, list={3:0}, next={0:0}] [L554] length-- VAL [\old(c)=0, c=1, length=0, list={3:0}, next={0:0}] [L556] COND FALSE !(length > 0) VAL [\old(c)=0, c=1, length=0, list={3:0}, next={0:0}] [L562] return 0; [L541] struct item *list = ((void *)0); [L562] return 0; VAL [\old(c)=0, \result=0, c=1, length=0, next={0:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 119 locations, 45 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.1s, OverallIterations: 18, TraceHistogramMax: 2, AutomataDifference: 11.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 912 SDtfs, 884 SDslu, 2603 SDs, 0 SdLazy, 3830 SolverSat, 188 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 5.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 264 GetRequests, 91 SyntacticMatches, 3 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=2, 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, 17 MinimizatonAttempts, 62 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 473 NumberOfCodeBlocks, 473 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 419 ConstructedInterpolants, 20 QuantifiedInterpolants, 104454 SizeOfPredicates, 36 NumberOfNonLiveVariables, 520 ConjunctsInSsa, 85 ConjunctsInUnsatCore, 19 InterpolantComputations, 15 PerfectInterpolantSequences, 6/28 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-906a4fb [2020-10-19 18:06:14,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:06:14,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:06:14,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:06:14,649 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:06:14,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:06:14,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:06:14,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:06:14,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:06:14,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:06:14,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:06:14,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:06:14,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:06:14,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:06:14,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:06:14,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:06:14,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:06:14,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:06:14,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:06:14,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:06:14,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:06:14,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:06:14,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:06:14,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:06:14,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:06:14,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:06:14,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:06:14,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:06:14,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:06:14,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:06:14,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:06:14,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:06:14,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:06:14,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:06:14,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:06:14,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:06:14,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:06:14,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:06:14,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:06:14,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:06:14,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:06:14,723 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-19 18:06:14,770 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:06:14,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:06:14,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:06:14,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:06:14,773 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:06:14,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:06:14,773 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:06:14,773 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:06:14,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:06:14,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:06:14,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:06:14,775 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:06:14,776 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:06:14,776 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:06:14,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:06:14,777 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:06:14,777 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-19 18:06:14,777 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-19 18:06:14,778 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:06:14,778 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:06:14,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:06:14,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:06:14,779 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:06:14,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:06:14,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:06:14,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:06:14,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:06:14,780 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-19 18:06:14,780 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-19 18:06:14,780 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:06:14,781 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-19 18:06:14,781 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86beb7e463e80bf4cd7303ba718fa4bc3c1db625 [2020-10-19 18:06:15,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:06:15,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:06:15,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:06:15,090 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:06:15,091 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:06:15,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/test-0232_1-1.i [2020-10-19 18:06:15,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87562249c/e226c8ae55974f3eb24a23f69ed21504/FLAGf1584e412 [2020-10-19 18:06:15,580 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:06:15,581 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/test-0232_1-1.i [2020-10-19 18:06:15,596 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87562249c/e226c8ae55974f3eb24a23f69ed21504/FLAGf1584e412 [2020-10-19 18:06:15,898 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87562249c/e226c8ae55974f3eb24a23f69ed21504 [2020-10-19 18:06:15,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:06:15,906 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:06:15,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:06:15,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:06:15,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:06:15,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:06:15" (1/1) ... [2020-10-19 18:06:15,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a99a9a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:06:15, skipping insertion in model container [2020-10-19 18:06:15,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:06:15" (1/1) ... [2020-10-19 18:06:15,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:06:15,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:06:16,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:06:16,500 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:06:16,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:06:16,656 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:06:16,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:06:16 WrapperNode [2020-10-19 18:06:16,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:06:16,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:06:16,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:06:16,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:06:16,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:06:16" (1/1) ... [2020-10-19 18:06:16,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:06:16" (1/1) ... [2020-10-19 18:06:16,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:06:16" (1/1) ... [2020-10-19 18:06:16,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:06:16" (1/1) ... [2020-10-19 18:06:16,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:06:16" (1/1) ... [2020-10-19 18:06:16,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:06:16" (1/1) ... [2020-10-19 18:06:16,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:06:16" (1/1) ... [2020-10-19 18:06:16,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:06:16,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:06:16,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:06:16,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:06:16,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:06:16" (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 18:06:16,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:06:16,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:06:16,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-19 18:06:16,797 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:06:16,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 18:06:16,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 18:06:16,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 18:06:16,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 18:06:16,798 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 18:06:16,798 INFO L138 BoogieDeclarations]: Found implementation of procedure append [2020-10-19 18:06:16,798 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:06:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:06:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:06:16,799 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-19 18:06:16,799 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-19 18:06:16,799 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:06:16,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:06:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:06:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:06:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:06:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:06:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:06:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:06:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:06:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:06:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:06:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:06:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:06:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:06:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:06:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:06:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:06:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:06:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 18:06:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 18:06:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 18:06:16,804 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 18:06:16,804 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 18:06:16,804 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:06:16,804 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:06:16,804 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:06:16,805 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:06:16,805 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:06:16,805 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:06:16,805 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:06:16,805 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:06:16,806 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:06:16,806 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:06:16,806 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:06:16,806 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:06:16,806 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:06:16,807 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:06:16,807 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:06:16,807 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:06:16,807 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:06:16,808 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:06:16,808 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:06:16,808 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:06:16,808 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:06:16,809 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:06:16,809 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:06:16,809 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:06:16,809 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:06:16,809 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:06:16,810 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:06:16,810 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:06:16,810 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:06:16,810 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:06:16,811 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:06:16,811 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:06:16,811 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:06:16,811 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:06:16,812 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:06:16,812 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:06:16,812 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:06:16,812 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:06:16,813 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:06:16,813 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:06:16,813 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:06:16,813 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:06:16,813 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:06:16,814 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:06:16,814 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:06:16,814 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:06:16,814 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:06:16,814 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:06:16,815 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:06:16,815 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:06:16,815 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:06:16,815 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:06:16,815 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:06:16,816 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:06:16,816 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:06:16,816 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:06:16,816 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:06:16,816 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:06:16,817 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:06:16,817 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:06:16,817 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:06:16,817 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:06:16,817 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:06:16,817 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:06:16,818 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:06:16,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:06:16,818 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:06:16,818 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:06:16,818 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:06:16,818 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:06:16,818 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:06:16,818 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:06:16,819 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:06:16,819 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:06:16,819 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:06:16,819 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:06:16,819 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:06:16,819 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:06:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:06:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:06:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:06:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:06:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:06:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:06:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:06:16,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:06:16,821 INFO L130 BoogieDeclarations]: Found specification of procedure append [2020-10-19 18:06:16,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:06:16,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:06:16,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:06:16,821 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:06:16,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-19 18:06:16,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:06:16,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:06:16,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-19 18:06:16,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:06:16,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-19 18:06:16,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-19 18:06:16,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-19 18:06:17,581 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:06:17,581 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-19 18:06:17,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:06:17 BoogieIcfgContainer [2020-10-19 18:06:17,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:06:17,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:06:17,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:06:17,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:06:17,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:06:15" (1/3) ... [2020-10-19 18:06:17,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d265b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:06:17, skipping insertion in model container [2020-10-19 18:06:17,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:06:16" (2/3) ... [2020-10-19 18:06:17,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d265b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:06:17, skipping insertion in model container [2020-10-19 18:06:17,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:06:17" (3/3) ... [2020-10-19 18:06:17,593 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0232_1-1.i [2020-10-19 18:06:17,606 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:06:17,616 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 45 error locations. [2020-10-19 18:06:17,632 INFO L253 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2020-10-19 18:06:17,656 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:06:17,656 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:06:17,656 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:06:17,657 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:06:17,657 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:06:17,657 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:06:17,658 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:06:17,658 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:06:17,677 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-10-19 18:06:17,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:06:17,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:06:17,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:06:17,690 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:06:17,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:06:17,697 INFO L82 PathProgramCache]: Analyzing trace with hash 920803252, now seen corresponding path program 1 times [2020-10-19 18:06:17,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:06:17,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [958657023] [2020-10-19 18:06:17,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-19 18:06:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:17,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:06:17,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:06:17,987 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 18:06:17,988 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:17,996 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:17,997 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:06:17,998 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:06:18,061 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:18,061 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 14 treesize of output 30 [2020-10-19 18:06:18,063 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:18,086 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2020-10-19 18:06:18,087 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 18:06:18,088 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2020-10-19 18:06:18,108 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 18:06:18,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:06:18,142 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 18:06:18,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [958657023] [2020-10-19 18:06:18,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:06:18,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-19 18:06:18,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013715433] [2020-10-19 18:06:18,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:06:18,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:06:18,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:06:18,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:06:18,170 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 5 states. [2020-10-19 18:06:18,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:06:18,572 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2020-10-19 18:06:18,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:06:18,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-19 18:06:18,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:06:18,584 INFO L225 Difference]: With dead ends: 94 [2020-10-19 18:06:18,585 INFO L226 Difference]: Without dead ends: 91 [2020-10-19 18:06:18,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:06:18,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-19 18:06:18,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2020-10-19 18:06:18,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-19 18:06:18,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2020-10-19 18:06:18,625 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 9 [2020-10-19 18:06:18,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:06:18,625 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2020-10-19 18:06:18,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:06:18,626 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2020-10-19 18:06:18,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:06:18,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:06:18,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:06:18,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-19 18:06:18,847 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:06:18,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:06:18,847 INFO L82 PathProgramCache]: Analyzing trace with hash 920803253, now seen corresponding path program 1 times [2020-10-19 18:06:18,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:06:18,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087370471] [2020-10-19 18:06:18,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-19 18:06:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:18,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-19 18:06:18,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:06:19,003 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 18:06:19,004 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:19,012 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:19,018 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 18:06:19,019 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:19,028 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:19,028 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:06:19,029 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2020-10-19 18:06:19,104 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:19,104 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 13 treesize of output 17 [2020-10-19 18:06:19,106 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:19,119 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:19,126 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2020-10-19 18:06:19,127 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:19,151 INFO L625 ElimStorePlain]: treesize reduction 4, result has 80.0 percent of original size [2020-10-19 18:06:19,153 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:06:19,153 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:16 [2020-10-19 18:06:19,181 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 18:06:19,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:06:19,246 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:06:21,274 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_append_#t~malloc6.base_3| (_ BitVec 32))) (or (bvule (bvadd |c_append_#in~plist.offset| (_ bv4 32)) (select (store |c_#length| |v_append_#t~malloc6.base_3| (_ bv8 32)) |c_append_#in~plist.base|)) (not (= (_ bv0 1) (select |c_#valid| |v_append_#t~malloc6.base_3|))))) (or (forall ((|v_append_#t~malloc6.base_3| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_append_#t~malloc6.base_3|)))) (bvule |c_append_#in~plist.offset| (bvadd |c_append_#in~plist.offset| (_ bv4 32))))) is different from false [2020-10-19 18:06:23,744 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 25 [2020-10-19 18:06:23,764 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 18:06:23,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2087370471] [2020-10-19 18:06:23,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:06:23,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-10-19 18:06:23,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047166263] [2020-10-19 18:06:23,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:06:23,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:06:23,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:06:23,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=30, Unknown=1, NotChecked=10, Total=56 [2020-10-19 18:06:23,773 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand 8 states. [2020-10-19 18:06:38,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:06:38,109 INFO L93 Difference]: Finished difference Result 123 states and 130 transitions. [2020-10-19 18:06:38,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:06:38,110 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-10-19 18:06:38,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:06:38,115 INFO L225 Difference]: With dead ends: 123 [2020-10-19 18:06:38,115 INFO L226 Difference]: Without dead ends: 123 [2020-10-19 18:06:38,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=25, Invalid=50, Unknown=1, NotChecked=14, Total=90 [2020-10-19 18:06:38,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-19 18:06:38,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 95. [2020-10-19 18:06:38,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-19 18:06:38,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2020-10-19 18:06:38,130 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 9 [2020-10-19 18:06:38,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:06:38,130 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2020-10-19 18:06:38,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:06:38,130 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2020-10-19 18:06:38,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 18:06:38,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:06:38,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:06:38,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-19 18:06:38,333 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:06:38,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:06:38,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1519870147, now seen corresponding path program 1 times [2020-10-19 18:06:38,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:06:38,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98055480] [2020-10-19 18:06:38,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-19 18:06:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:38,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 18:06:38,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:06:38,473 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 18:06:38,473 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:38,476 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:38,476 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:06:38,477 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:06:38,481 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 18:06:38,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:06:38,491 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 18:06:38,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98055480] [2020-10-19 18:06:38,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:06:38,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-19 18:06:38,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632778737] [2020-10-19 18:06:38,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:06:38,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:06:38,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:06:38,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:06:38,493 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand 3 states. [2020-10-19 18:06:38,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:06:38,651 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2020-10-19 18:06:38,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:06:38,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-19 18:06:38,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:06:38,652 INFO L225 Difference]: With dead ends: 91 [2020-10-19 18:06:38,652 INFO L226 Difference]: Without dead ends: 91 [2020-10-19 18:06:38,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:06:38,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-19 18:06:38,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-10-19 18:06:38,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-19 18:06:38,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-10-19 18:06:38,663 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 10 [2020-10-19 18:06:38,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:06:38,663 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-10-19 18:06:38,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:06:38,663 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-10-19 18:06:38,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 18:06:38,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:06:38,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:06:38,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-19 18:06:38,868 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:06:38,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:06:38,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1519870146, now seen corresponding path program 1 times [2020-10-19 18:06:38,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:06:38,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802127839] [2020-10-19 18:06:38,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-19 18:06:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:39,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:06:39,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:06:39,017 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 18:06:39,017 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:39,023 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:39,023 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:06:39,023 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:06:39,032 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 18:06:39,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:06:39,083 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 18:06:39,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802127839] [2020-10-19 18:06:39,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:06:39,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-10-19 18:06:39,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784838484] [2020-10-19 18:06:39,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:06:39,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:06:39,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:06:39,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:06:39,086 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 4 states. [2020-10-19 18:06:39,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:06:39,297 INFO L93 Difference]: Finished difference Result 87 states and 96 transitions. [2020-10-19 18:06:39,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:06:39,298 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-19 18:06:39,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:06:39,299 INFO L225 Difference]: With dead ends: 87 [2020-10-19 18:06:39,299 INFO L226 Difference]: Without dead ends: 87 [2020-10-19 18:06:39,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:06:39,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-19 18:06:39,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-10-19 18:06:39,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-19 18:06:39,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 96 transitions. [2020-10-19 18:06:39,307 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 96 transitions. Word has length 10 [2020-10-19 18:06:39,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:06:39,307 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 96 transitions. [2020-10-19 18:06:39,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:06:39,308 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 96 transitions. [2020-10-19 18:06:39,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 18:06:39,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:06:39,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:06:39,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-19 18:06:39,516 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:06:39,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:06:39,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1020530207, now seen corresponding path program 1 times [2020-10-19 18:06:39,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:06:39,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124095829] [2020-10-19 18:06:39,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-19 18:06:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:39,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-19 18:06:39,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:06:39,761 INFO L350 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2020-10-19 18:06:39,762 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 18 [2020-10-19 18:06:39,763 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:39,781 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:39,802 INFO L350 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2020-10-19 18:06:39,802 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 18 [2020-10-19 18:06:39,803 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:39,816 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:39,822 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-19 18:06:39,822 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:45, output treesize:37 [2020-10-19 18:06:39,883 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 18:06:39,885 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:39,895 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:39,898 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 18:06:39,899 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:39,903 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:39,904 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:06:39,904 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2020-10-19 18:06:39,924 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 18:06:39,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:06:39,955 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 18:06:39,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124095829] [2020-10-19 18:06:39,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:06:39,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 9 [2020-10-19 18:06:39,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297813699] [2020-10-19 18:06:39,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:06:39,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:06:39,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:06:39,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:06:39,958 INFO L87 Difference]: Start difference. First operand 87 states and 96 transitions. Second operand 9 states. [2020-10-19 18:06:40,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:06:40,571 INFO L93 Difference]: Finished difference Result 99 states and 109 transitions. [2020-10-19 18:06:40,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 18:06:40,572 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-19 18:06:40,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:06:40,573 INFO L225 Difference]: With dead ends: 99 [2020-10-19 18:06:40,574 INFO L226 Difference]: Without dead ends: 99 [2020-10-19 18:06:40,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-19 18:06:40,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-19 18:06:40,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 94. [2020-10-19 18:06:40,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-19 18:06:40,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2020-10-19 18:06:40,591 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 15 [2020-10-19 18:06:40,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:06:40,591 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2020-10-19 18:06:40,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:06:40,591 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2020-10-19 18:06:40,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 18:06:40,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:06:40,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:06:40,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-19 18:06:40,800 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:06:40,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:06:40,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1002042865, now seen corresponding path program 1 times [2020-10-19 18:06:40,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:06:40,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959821235] [2020-10-19 18:06:40,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-19 18:06:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:40,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 18:06:40,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:06:40,941 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 18:06:40,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:06:40,966 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 18:06:40,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959821235] [2020-10-19 18:06:40,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:06:40,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-19 18:06:40,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355996852] [2020-10-19 18:06:40,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:06:40,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:06:40,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:06:40,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:06:40,969 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand 6 states. [2020-10-19 18:06:41,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:06:41,091 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2020-10-19 18:06:41,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:06:41,093 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-19 18:06:41,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:06:41,096 INFO L225 Difference]: With dead ends: 140 [2020-10-19 18:06:41,096 INFO L226 Difference]: Without dead ends: 140 [2020-10-19 18:06:41,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:06:41,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-19 18:06:41,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 98. [2020-10-19 18:06:41,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-19 18:06:41,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 117 transitions. [2020-10-19 18:06:41,125 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 117 transitions. Word has length 24 [2020-10-19 18:06:41,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:06:41,126 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 117 transitions. [2020-10-19 18:06:41,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:06:41,126 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 117 transitions. [2020-10-19 18:06:41,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 18:06:41,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:06:41,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:06:41,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-19 18:06:41,330 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:06:41,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:06:41,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1003265060, now seen corresponding path program 1 times [2020-10-19 18:06:41,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:06:41,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463236221] [2020-10-19 18:06:41,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-19 18:06:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:41,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-19 18:06:41,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:06:41,558 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:06:41,558 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:41,579 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:41,586 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:06:41,587 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:41,609 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:41,610 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:06:41,611 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:28, output treesize:17 [2020-10-19 18:06:41,684 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 18:06:41,685 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:41,699 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:41,713 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 17 treesize of output 9 [2020-10-19 18:06:41,714 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:41,720 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:41,721 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:06:41,721 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:31, output treesize:9 [2020-10-19 18:06:41,751 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 18:06:41,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:06:42,220 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 36 treesize of output 28 [2020-10-19 18:06:42,225 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2020-10-19 18:06:42,267 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:42,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:06:42,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:06:42,274 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:42,300 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:42,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:06:42,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:06:42,304 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:42,325 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:42,325 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 4 xjuncts. [2020-10-19 18:06:42,325 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:61, output treesize:19 [2020-10-19 18:06:42,399 INFO L603 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-10-19 18:06:42,421 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 6 [2020-10-19 18:06:42,422 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:06:42,436 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 6 [2020-10-19 18:06:42,437 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:06:42,453 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 12 [2020-10-19 18:06:42,453 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:06:42,465 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 6 [2020-10-19 18:06:42,466 INFO L545 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:06:42,527 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:42,529 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2020-10-19 18:06:42,529 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:55, output treesize:45 [2020-10-19 18:06:42,752 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 19 [2020-10-19 18:06:42,783 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 18:06:42,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463236221] [2020-10-19 18:06:42,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:06:42,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-10-19 18:06:42,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10717935] [2020-10-19 18:06:42,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 18:06:42,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:06:42,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 18:06:42,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:06:42,786 INFO L87 Difference]: Start difference. First operand 98 states and 117 transitions. Second operand 12 states. [2020-10-19 18:06:43,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:06:43,971 INFO L93 Difference]: Finished difference Result 109 states and 125 transitions. [2020-10-19 18:06:43,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:06:43,972 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2020-10-19 18:06:43,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:06:43,974 INFO L225 Difference]: With dead ends: 109 [2020-10-19 18:06:43,974 INFO L226 Difference]: Without dead ends: 109 [2020-10-19 18:06:43,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:06:43,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-19 18:06:43,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 97. [2020-10-19 18:06:43,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-19 18:06:43,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 115 transitions. [2020-10-19 18:06:43,982 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 115 transitions. Word has length 24 [2020-10-19 18:06:43,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:06:43,982 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 115 transitions. [2020-10-19 18:06:43,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 18:06:43,982 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 115 transitions. [2020-10-19 18:06:43,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 18:06:43,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:06:43,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:06:44,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-19 18:06:44,189 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:06:44,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:06:44,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1003265061, now seen corresponding path program 1 times [2020-10-19 18:06:44,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:06:44,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836299076] [2020-10-19 18:06:44,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-19 18:06:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:44,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 18:06:44,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:06:44,382 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:06:44,383 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:44,389 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:44,390 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 18:06:44,390 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:9 [2020-10-19 18:06:44,418 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 19 treesize of output 11 [2020-10-19 18:06:44,418 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:44,421 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:44,421 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 18:06:44,422 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:7 [2020-10-19 18:06:44,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:06:44,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:06:44,537 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 32 treesize of output 28 [2020-10-19 18:06:44,540 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:06:44,564 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:44,565 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:06:44,565 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:28 [2020-10-19 18:06:44,644 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-10-19 18:06:44,674 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 18:06:44,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836299076] [2020-10-19 18:06:44,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:06:44,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2020-10-19 18:06:44,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572062512] [2020-10-19 18:06:44,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:06:44,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:06:44,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:06:44,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:06:44,677 INFO L87 Difference]: Start difference. First operand 97 states and 115 transitions. Second operand 8 states. [2020-10-19 18:06:45,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:06:45,197 INFO L93 Difference]: Finished difference Result 105 states and 120 transitions. [2020-10-19 18:06:45,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:06:45,197 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-19 18:06:45,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:06:45,199 INFO L225 Difference]: With dead ends: 105 [2020-10-19 18:06:45,199 INFO L226 Difference]: Without dead ends: 105 [2020-10-19 18:06:45,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:06:45,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-19 18:06:45,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 96. [2020-10-19 18:06:45,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-19 18:06:45,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 113 transitions. [2020-10-19 18:06:45,205 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 113 transitions. Word has length 24 [2020-10-19 18:06:45,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:06:45,205 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 113 transitions. [2020-10-19 18:06:45,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:06:45,205 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 113 transitions. [2020-10-19 18:06:45,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 18:06:45,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:06:45,206 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, 1] [2020-10-19 18:06:45,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-19 18:06:45,410 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:06:45,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:06:45,411 INFO L82 PathProgramCache]: Analyzing trace with hash 408031290, now seen corresponding path program 1 times [2020-10-19 18:06:45,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:06:45,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056806796] [2020-10-19 18:06:45,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-10-19 18:06:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:45,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 18:06:45,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:06:45,552 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:06:45,553 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:45,556 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:45,556 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:06:45,556 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-10-19 18:06:45,578 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 18:06:45,578 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:45,580 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:45,580 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 18:06:45,580 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-10-19 18:06:45,592 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 18:06:45,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:06:45,687 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 28 treesize of output 24 [2020-10-19 18:06:45,694 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2020-10-19 18:06:45,702 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:45,702 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2020-10-19 18:06:45,703 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:10 [2020-10-19 18:06:45,711 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 18:06:45,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056806796] [2020-10-19 18:06:45,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:06:45,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-19 18:06:45,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640358850] [2020-10-19 18:06:45,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:06:45,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:06:45,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:06:45,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:06:45,713 INFO L87 Difference]: Start difference. First operand 96 states and 113 transitions. Second operand 6 states. [2020-10-19 18:06:46,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:06:46,026 INFO L93 Difference]: Finished difference Result 107 states and 121 transitions. [2020-10-19 18:06:46,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:06:46,026 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-10-19 18:06:46,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:06:46,027 INFO L225 Difference]: With dead ends: 107 [2020-10-19 18:06:46,027 INFO L226 Difference]: Without dead ends: 107 [2020-10-19 18:06:46,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:06:46,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-19 18:06:46,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 95. [2020-10-19 18:06:46,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-19 18:06:46,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 111 transitions. [2020-10-19 18:06:46,033 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 111 transitions. Word has length 27 [2020-10-19 18:06:46,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:06:46,033 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 111 transitions. [2020-10-19 18:06:46,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:06:46,034 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 111 transitions. [2020-10-19 18:06:46,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 18:06:46,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:06:46,035 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, 1, 1] [2020-10-19 18:06:46,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-10-19 18:06:46,248 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:06:46,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:06:46,249 INFO L82 PathProgramCache]: Analyzing trace with hash -235931780, now seen corresponding path program 1 times [2020-10-19 18:06:46,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:06:46,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708870044] [2020-10-19 18:06:46,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-10-19 18:06:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:46,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 18:06:46,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:06:46,428 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 18:06:46,429 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:46,439 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:46,440 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 18:06:46,440 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:16 [2020-10-19 18:06:46,490 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 23 treesize of output 11 [2020-10-19 18:06:46,491 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:46,497 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:46,498 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 18:06:46,498 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:8 [2020-10-19 18:06:46,520 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 18:06:46,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:06:46,690 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 28 treesize of output 24 [2020-10-19 18:06:46,691 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:06:46,723 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:46,724 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:06:46,724 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:24 [2020-10-19 18:06:46,790 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 18:06:46,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708870044] [2020-10-19 18:06:46,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:06:46,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 10 [2020-10-19 18:06:46,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390356620] [2020-10-19 18:06:46,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 18:06:46,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:06:46,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 18:06:46,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:06:46,793 INFO L87 Difference]: Start difference. First operand 95 states and 111 transitions. Second operand 11 states. [2020-10-19 18:06:47,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:06:47,630 INFO L93 Difference]: Finished difference Result 106 states and 119 transitions. [2020-10-19 18:06:47,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 18:06:47,631 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-10-19 18:06:47,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:06:47,632 INFO L225 Difference]: With dead ends: 106 [2020-10-19 18:06:47,632 INFO L226 Difference]: Without dead ends: 106 [2020-10-19 18:06:47,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:06:47,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-19 18:06:47,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 94. [2020-10-19 18:06:47,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-19 18:06:47,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 109 transitions. [2020-10-19 18:06:47,638 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 109 transitions. Word has length 28 [2020-10-19 18:06:47,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:06:47,638 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 109 transitions. [2020-10-19 18:06:47,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 18:06:47,638 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 109 transitions. [2020-10-19 18:06:47,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-19 18:06:47,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:06:47,644 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:06:47,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-10-19 18:06:47,845 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:06:47,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:06:47,846 INFO L82 PathProgramCache]: Analyzing trace with hash 2021644624, now seen corresponding path program 1 times [2020-10-19 18:06:47,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:06:47,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685509244] [2020-10-19 18:06:47,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-10-19 18:06:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:48,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-19 18:06:48,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:06:48,039 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:06:48,039 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:48,046 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:48,047 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 18:06:48,047 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:9 [2020-10-19 18:06:48,103 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:48,103 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 16 treesize of output 44 [2020-10-19 18:06:48,104 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:48,125 INFO L625 ElimStorePlain]: treesize reduction 26, result has 36.6 percent of original size [2020-10-19 18:06:48,125 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:06:48,125 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2020-10-19 18:06:48,204 INFO L350 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2020-10-19 18:06:48,204 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 27 treesize of output 22 [2020-10-19 18:06:48,205 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:48,215 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:48,216 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-19 18:06:48,216 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:32, output treesize:28 [2020-10-19 18:06:48,267 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 19 treesize of output 11 [2020-10-19 18:06:48,267 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:48,279 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:48,280 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:06:48,280 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:24, output treesize:13 [2020-10-19 18:06:48,316 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:06:48,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:06:48,486 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 32 treesize of output 28 [2020-10-19 18:06:48,487 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:06:48,510 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:48,511 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:06:48,511 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:28 [2020-10-19 18:06:48,619 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-10-19 18:06:48,638 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:06:48,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685509244] [2020-10-19 18:06:48,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:06:48,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2020-10-19 18:06:48,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471943488] [2020-10-19 18:06:48,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-19 18:06:48,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:06:48,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-19 18:06:48,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:06:48,640 INFO L87 Difference]: Start difference. First operand 94 states and 109 transitions. Second operand 14 states. [2020-10-19 18:06:50,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:06:50,001 INFO L93 Difference]: Finished difference Result 109 states and 121 transitions. [2020-10-19 18:06:50,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 18:06:50,002 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 29 [2020-10-19 18:06:50,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:06:50,003 INFO L225 Difference]: With dead ends: 109 [2020-10-19 18:06:50,003 INFO L226 Difference]: Without dead ends: 109 [2020-10-19 18:06:50,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-10-19 18:06:50,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-19 18:06:50,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 98. [2020-10-19 18:06:50,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-19 18:06:50,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2020-10-19 18:06:50,012 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 29 [2020-10-19 18:06:50,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:06:50,012 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2020-10-19 18:06:50,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-19 18:06:50,013 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2020-10-19 18:06:50,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-19 18:06:50,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:06:50,016 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:06:50,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-10-19 18:06:50,216 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:06:50,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:06:50,217 INFO L82 PathProgramCache]: Analyzing trace with hash 2021644625, now seen corresponding path program 1 times [2020-10-19 18:06:50,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:06:50,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024620615] [2020-10-19 18:06:50,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-10-19 18:06:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:50,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 31 conjunts are in the unsatisfiable core [2020-10-19 18:06:50,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:06:50,489 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:06:50,489 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:50,507 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:50,513 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:06:50,513 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:50,529 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:50,530 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:06:50,530 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:33, output treesize:26 [2020-10-19 18:06:50,600 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:50,601 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 15 treesize of output 19 [2020-10-19 18:06:50,602 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:50,617 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:50,621 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2020-10-19 18:06:50,622 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:50,636 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:50,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1024620615] [2020-10-19 18:06:50,639 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 18:06:50,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [262294412] [2020-10-19 18:06:50,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 18:06:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:50,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 36 conjunts are in the unsatisfiable core [2020-10-19 18:06:50,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:06:51,013 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 18:06:51,013 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:51,025 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:51,029 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 18:06:51,029 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:51,040 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:51,041 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:06:51,041 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:22, output treesize:20 [2020-10-19 18:06:51,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:06:51,089 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2020-10-19 18:06:51,089 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:51,113 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:51,125 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:51,125 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 18:06:51,126 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:51,143 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:51,144 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 18:06:51,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623110317] [2020-10-19 18:06:51,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:06:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:06:51,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 31 conjunts are in the unsatisfiable core [2020-10-19 18:06:51,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:06:51,287 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:06:51,288 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:51,306 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:51,312 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:06:51,312 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:51,325 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:51,326 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:06:51,326 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:33, output treesize:26 [2020-10-19 18:06:51,348 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:51,349 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 15 treesize of output 19 [2020-10-19 18:06:51,349 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:51,366 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:51,372 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2020-10-19 18:06:51,373 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:06:51,391 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:06:51,392 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 18:06:51,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:06:51,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-19 18:06:51,393 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-19 18:06:51,393 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:06:52,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3,14 cvc4 --incremental --print-success --lang smt --rewrite-divk,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:06:52,024 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-19 18:06:52,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:06:52 BoogieIcfgContainer [2020-10-19 18:06:52,025 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:06:52,025 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:06:52,025 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:06:52,025 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:06:52,026 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:06:17" (3/4) ... [2020-10-19 18:06:52,029 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:06:52,029 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:06:52,030 INFO L168 Benchmark]: Toolchain (without parser) took 36128.10 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 317.2 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -172.2 MB). Peak memory consumption was 145.0 MB. Max. memory is 11.5 GB. [2020-10-19 18:06:52,030 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:06:52,031 INFO L168 Benchmark]: CACSL2BoogieTranslator took 749.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -186.8 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:06:52,031 INFO L168 Benchmark]: Boogie Preprocessor took 74.55 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 18:06:52,031 INFO L168 Benchmark]: RCFGBuilder took 851.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 64.4 MB). Peak memory consumption was 64.4 MB. Max. memory is 11.5 GB. [2020-10-19 18:06:52,032 INFO L168 Benchmark]: TraceAbstraction took 34439.86 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 156.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -49.8 MB). Peak memory consumption was 107.0 MB. Max. memory is 11.5 GB. [2020-10-19 18:06:52,032 INFO L168 Benchmark]: Witness Printer took 4.00 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:06:52,034 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 749.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -186.8 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 74.55 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 851.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 64.4 MB). Peak memory consumption was 64.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 34439.86 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 156.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -49.8 MB). Peak memory consumption was 107.0 MB. Max. memory is 11.5 GB. * Witness Printer took 4.00 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L524] int c = 0; [L541] struct item *list = ((void *)0); [L542] int length = 0; [L544] CALL append(&list) [L531] c++ [L532] struct item *item = malloc(sizeof *item); [L533] EXPR \read(**plist) [L533] item->next = *plist [L534] EXPR item->next [L534-L536] EXPR (item->next) ? item->next->data : malloc(sizeof *item) [L534-L536] EXPR (item->next) ? item->next->data : malloc(sizeof *item) [L534-L536] item->data = (item->next) ? item->next->data : malloc(sizeof *item) [L537] *plist = item [L544] RET append(&list) [L545] length++ [L546] COND TRUE __VERIFIER_nondet_int() && c < 20 [L544] CALL append(&list) [L531] c++ [L532] struct item *item = malloc(sizeof *item); [L533] EXPR \read(**plist) [L533] item->next = *plist [L534] EXPR item->next [L534-L536] (item->next) ? item->next->data : malloc(sizeof *item) [L535] EXPR item->next [L535] item->next->data - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 124 locations, 45 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 34.3s, OverallIterations: 12, TraceHistogramMax: 2, AutomataDifference: 20.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 680 SDtfs, 811 SDslu, 2127 SDs, 0 SdLazy, 1749 SolverSat, 102 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 18.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 434 GetRequests, 339 SyntacticMatches, 5 SemanticMatches, 90 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 7.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 132 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 396 ConstructedInterpolants, 15 QuantifiedInterpolants, 62702 SizeOfPredicates, 97 NumberOfNonLiveVariables, 1441 ConjunctsInSsa, 109 ConjunctsInUnsatCore, 22 InterpolantComputations, 20 PerfectInterpolantSequences, 4/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...