./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30f4e4ab 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/array-memsafety/openbsd_cmemrchr-alloca-2.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 b2f3c0ded3a6ea37e981661d4b4066d384875e4d ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:32:14,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:32:14,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:32:14,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:32:14,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:32:14,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:32:14,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:32:14,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:32:14,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:32:14,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:32:14,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:32:14,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:32:14,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:32:14,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:32:14,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:32:14,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:32:14,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:32:14,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:32:14,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:32:14,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:32:14,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:32:14,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:32:14,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:32:14,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:32:14,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:32:14,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:32:14,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:32:14,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:32:14,585 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:32:14,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:32:14,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:32:14,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:32:14,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:32:14,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:32:14,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:32:14,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:32:14,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:32:14,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:32:14,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:32:14,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:32:14,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:32:14,595 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-28 02:32:14,609 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:32:14,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:32:14,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:32:14,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:32:14,612 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:32:14,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:32:14,612 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 02:32:14,613 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:32:14,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:32:14,613 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 02:32:14,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:32:14,614 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 02:32:14,614 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 02:32:14,614 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 02:32:14,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:32:14,615 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 02:32:14,615 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 02:32:14,615 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:32:14,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:32:14,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:32:14,616 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:32:14,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:32:14,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:32:14,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:32:14,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:32:14,618 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:32:14,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 02:32:14,618 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 -> b2f3c0ded3a6ea37e981661d4b4066d384875e4d [2019-11-28 02:32:14,945 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:32:14,969 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:32:14,974 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:32:14,975 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:32:14,976 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:32:14,977 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i [2019-11-28 02:32:15,054 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d865c5b63/deb7f2f90fde422f9308b913e7858ff9/FLAGca9dae474 [2019-11-28 02:32:15,602 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:32:15,603 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i [2019-11-28 02:32:15,624 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d865c5b63/deb7f2f90fde422f9308b913e7858ff9/FLAGca9dae474 [2019-11-28 02:32:15,897 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d865c5b63/deb7f2f90fde422f9308b913e7858ff9 [2019-11-28 02:32:15,901 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:32:15,902 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 02:32:15,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:32:15,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:32:15,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:32:15,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:32:15" (1/1) ... [2019-11-28 02:32:15,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7085c7ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:32:15, skipping insertion in model container [2019-11-28 02:32:15,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:32:15" (1/1) ... [2019-11-28 02:32:15,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:32:15,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:32:16,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:32:16,359 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:32:16,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:32:16,493 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:32:16,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:32:16 WrapperNode [2019-11-28 02:32:16,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:32:16,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:32:16,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:32:16,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:32:16,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:32:16" (1/1) ... [2019-11-28 02:32:16,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:32:16" (1/1) ... [2019-11-28 02:32:16,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:32:16" (1/1) ... [2019-11-28 02:32:16,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:32:16" (1/1) ... [2019-11-28 02:32:16,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:32:16" (1/1) ... [2019-11-28 02:32:16,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:32:16" (1/1) ... [2019-11-28 02:32:16,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:32:16" (1/1) ... [2019-11-28 02:32:16,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:32:16,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:32:16,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:32:16,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:32:16,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:32:16" (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 [2019-11-28 02:32:16,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 02:32:16,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:32:16,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-28 02:32:16,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-28 02:32:16,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-28 02:32:16,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-28 02:32:16,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-28 02:32:16,635 INFO L138 BoogieDeclarations]: Found implementation of procedure cmemrchr [2019-11-28 02:32:16,635 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 02:32:16,635 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-28 02:32:16,636 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-28 02:32:16,636 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-28 02:32:16,636 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-28 02:32:16,636 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-28 02:32:16,636 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-28 02:32:16,637 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-28 02:32:16,637 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-28 02:32:16,637 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-28 02:32:16,637 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-28 02:32:16,638 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-28 02:32:16,638 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-28 02:32:16,638 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-28 02:32:16,638 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-28 02:32:16,638 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-28 02:32:16,639 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-28 02:32:16,639 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-28 02:32:16,639 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-28 02:32:16,639 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-28 02:32:16,640 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-28 02:32:16,640 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-28 02:32:16,640 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-28 02:32:16,640 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-28 02:32:16,640 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-28 02:32:16,641 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-28 02:32:16,641 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-28 02:32:16,641 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-28 02:32:16,641 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-28 02:32:16,642 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-28 02:32:16,642 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-28 02:32:16,642 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-28 02:32:16,642 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-28 02:32:16,643 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-28 02:32:16,643 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-28 02:32:16,643 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-28 02:32:16,643 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-28 02:32:16,643 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-28 02:32:16,644 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-28 02:32:16,644 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-28 02:32:16,644 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-28 02:32:16,644 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-28 02:32:16,644 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-28 02:32:16,645 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-28 02:32:16,645 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-28 02:32:16,645 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-28 02:32:16,645 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-28 02:32:16,646 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-28 02:32:16,646 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-28 02:32:16,646 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-28 02:32:16,646 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-28 02:32:16,646 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-28 02:32:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-28 02:32:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-28 02:32:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-28 02:32:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-28 02:32:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-28 02:32:16,648 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-28 02:32:16,648 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-28 02:32:16,648 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-28 02:32:16,648 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-28 02:32:16,649 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-28 02:32:16,649 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-28 02:32:16,649 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-28 02:32:16,649 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-28 02:32:16,649 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-28 02:32:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-28 02:32:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-28 02:32:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-28 02:32:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-28 02:32:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-28 02:32:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-28 02:32:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-28 02:32:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-28 02:32:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-28 02:32:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-28 02:32:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-28 02:32:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-28 02:32:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-28 02:32:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-28 02:32:16,653 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-28 02:32:16,653 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-28 02:32:16,653 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-28 02:32:16,653 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-28 02:32:16,653 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-28 02:32:16,654 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-28 02:32:16,654 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-28 02:32:16,654 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-28 02:32:16,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-28 02:32:16,654 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-28 02:32:16,655 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-28 02:32:16,655 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-28 02:32:16,655 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-28 02:32:16,655 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-28 02:32:16,655 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-28 02:32:16,655 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-28 02:32:16,656 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-28 02:32:16,656 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-28 02:32:16,656 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-28 02:32:16,656 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-28 02:32:16,657 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-28 02:32:16,657 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-28 02:32:16,657 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-28 02:32:16,657 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-28 02:32:16,657 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-28 02:32:16,658 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-28 02:32:16,658 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-28 02:32:16,658 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-28 02:32:16,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-28 02:32:16,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-28 02:32:16,659 INFO L130 BoogieDeclarations]: Found specification of procedure cmemrchr [2019-11-28 02:32:16,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 02:32:16,659 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 02:32:16,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 02:32:16,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 02:32:16,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 02:32:16,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 02:32:16,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:32:17,179 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:32:17,179 INFO L297 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-28 02:32:17,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:32:17 BoogieIcfgContainer [2019-11-28 02:32:17,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:32:17,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:32:17,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:32:17,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:32:17,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:32:15" (1/3) ... [2019-11-28 02:32:17,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c329759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:32:17, skipping insertion in model container [2019-11-28 02:32:17,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:32:16" (2/3) ... [2019-11-28 02:32:17,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c329759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:32:17, skipping insertion in model container [2019-11-28 02:32:17,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:32:17" (3/3) ... [2019-11-28 02:32:17,190 INFO L109 eAbstractionObserver]: Analyzing ICFG openbsd_cmemrchr-alloca-2.i [2019-11-28 02:32:17,201 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:32:17,209 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-11-28 02:32:17,223 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-28 02:32:17,241 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:32:17,241 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 02:32:17,241 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:32:17,242 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:32:17,242 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:32:17,243 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:32:17,245 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:32:17,245 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:32:17,261 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-11-28 02:32:17,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 02:32:17,271 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:32:17,272 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:32:17,272 INFO L410 AbstractCegarLoop]: === Iteration 1 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:32:17,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:32:17,279 INFO L82 PathProgramCache]: Analyzing trace with hash -840380262, now seen corresponding path program 1 times [2019-11-28 02:32:17,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:32:17,287 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183165190] [2019-11-28 02:32:17,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:32:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:17,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:32:17,509 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183165190] [2019-11-28 02:32:17,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:32:17,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:32:17,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664088219] [2019-11-28 02:32:17,517 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:32:17,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:32:17,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:32:17,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:32:17,541 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2019-11-28 02:32:17,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:32:17,698 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-11-28 02:32:17,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:32:17,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-28 02:32:17,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:32:17,712 INFO L225 Difference]: With dead ends: 33 [2019-11-28 02:32:17,712 INFO L226 Difference]: Without dead ends: 30 [2019-11-28 02:32:17,714 INFO L630 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 [2019-11-28 02:32:17,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-28 02:32:17,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-28 02:32:17,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-28 02:32:17,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-11-28 02:32:17,757 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 11 [2019-11-28 02:32:17,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:32:17,758 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-11-28 02:32:17,758 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:32:17,759 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-11-28 02:32:17,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 02:32:17,759 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:32:17,760 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:32:17,760 INFO L410 AbstractCegarLoop]: === Iteration 2 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:32:17,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:32:17,761 INFO L82 PathProgramCache]: Analyzing trace with hash -840380261, now seen corresponding path program 1 times [2019-11-28 02:32:17,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:32:17,761 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922668207] [2019-11-28 02:32:17,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:32:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:17,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:32:17,910 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922668207] [2019-11-28 02:32:17,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:32:17,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 02:32:17,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089682534] [2019-11-28 02:32:17,913 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 02:32:17,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:32:17,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 02:32:17,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:32:17,914 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 6 states. [2019-11-28 02:32:18,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:32:18,062 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2019-11-28 02:32:18,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 02:32:18,063 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-28 02:32:18,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:32:18,065 INFO L225 Difference]: With dead ends: 34 [2019-11-28 02:32:18,065 INFO L226 Difference]: Without dead ends: 34 [2019-11-28 02:32:18,066 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-28 02:32:18,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-28 02:32:18,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2019-11-28 02:32:18,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-28 02:32:18,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2019-11-28 02:32:18,072 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 11 [2019-11-28 02:32:18,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:32:18,072 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2019-11-28 02:32:18,072 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 02:32:18,072 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2019-11-28 02:32:18,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 02:32:18,073 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:32:18,073 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:32:18,074 INFO L410 AbstractCegarLoop]: === Iteration 3 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:32:18,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:32:18,074 INFO L82 PathProgramCache]: Analyzing trace with hash 361396958, now seen corresponding path program 1 times [2019-11-28 02:32:18,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:32:18,075 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772475072] [2019-11-28 02:32:18,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:32:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:18,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:32:18,219 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772475072] [2019-11-28 02:32:18,219 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957668390] [2019-11-28 02:32:18,219 INFO L94 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 [2019-11-28 02:32:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:18,350 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-28 02:32:18,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:32:18,427 INFO L377 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 [2019-11-28 02:32:18,428 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:32:18,436 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:32:18,437 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:32:18,438 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-28 02:32:18,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:32:18,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:32:18,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 6 [2019-11-28 02:32:18,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235435389] [2019-11-28 02:32:18,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 02:32:18,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:32:18,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 02:32:18,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-28 02:32:18,458 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 7 states. [2019-11-28 02:32:18,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:32:18,581 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-11-28 02:32:18,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 02:32:18,582 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2019-11-28 02:32:18,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:32:18,583 INFO L225 Difference]: With dead ends: 33 [2019-11-28 02:32:18,583 INFO L226 Difference]: Without dead ends: 33 [2019-11-28 02:32:18,583 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-28 02:32:18,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-28 02:32:18,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2019-11-28 02:32:18,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-28 02:32:18,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-11-28 02:32:18,589 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 15 [2019-11-28 02:32:18,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:32:18,595 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-11-28 02:32:18,595 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 02:32:18,595 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-11-28 02:32:18,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-28 02:32:18,597 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:32:18,597 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:32:18,802 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:32:18,802 INFO L410 AbstractCegarLoop]: === Iteration 4 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:32:18,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:32:18,803 INFO L82 PathProgramCache]: Analyzing trace with hash 25874007, now seen corresponding path program 1 times [2019-11-28 02:32:18,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:32:18,803 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814835890] [2019-11-28 02:32:18,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:32:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:18,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:32:18,953 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814835890] [2019-11-28 02:32:18,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:32:18,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-28 02:32:18,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194418987] [2019-11-28 02:32:18,955 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 02:32:18,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:32:18,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 02:32:18,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-28 02:32:18,956 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 8 states. [2019-11-28 02:32:19,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:32:19,182 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2019-11-28 02:32:19,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 02:32:19,182 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-11-28 02:32:19,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:32:19,186 INFO L225 Difference]: With dead ends: 32 [2019-11-28 02:32:19,186 INFO L226 Difference]: Without dead ends: 32 [2019-11-28 02:32:19,186 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-28 02:32:19,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-28 02:32:19,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2019-11-28 02:32:19,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-28 02:32:19,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2019-11-28 02:32:19,192 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 19 [2019-11-28 02:32:19,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:32:19,192 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2019-11-28 02:32:19,192 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 02:32:19,192 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2019-11-28 02:32:19,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-28 02:32:19,193 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:32:19,193 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:32:19,194 INFO L410 AbstractCegarLoop]: === Iteration 5 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:32:19,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:32:19,194 INFO L82 PathProgramCache]: Analyzing trace with hash 25874008, now seen corresponding path program 1 times [2019-11-28 02:32:19,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:32:19,195 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288156639] [2019-11-28 02:32:19,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:32:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:19,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:32:19,567 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288156639] [2019-11-28 02:32:19,567 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472628272] [2019-11-28 02:32:19,567 INFO L94 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 [2019-11-28 02:32:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:19,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 32 conjunts are in the unsatisfiable core [2019-11-28 02:32:19,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:32:19,737 INFO L377 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 [2019-11-28 02:32:19,737 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:32:19,747 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:32:19,747 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:32:19,748 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2019-11-28 02:32:19,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 02:32:19,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 02:32:19,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 18 [2019-11-28 02:32:19,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249630084] [2019-11-28 02:32:19,939 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-28 02:32:19,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:32:19,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-28 02:32:19,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2019-11-28 02:32:19,940 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 9 states. [2019-11-28 02:32:20,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:32:20,172 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2019-11-28 02:32:20,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 02:32:20,173 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2019-11-28 02:32:20,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:32:20,174 INFO L225 Difference]: With dead ends: 35 [2019-11-28 02:32:20,174 INFO L226 Difference]: Without dead ends: 35 [2019-11-28 02:32:20,175 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2019-11-28 02:32:20,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-28 02:32:20,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2019-11-28 02:32:20,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-28 02:32:20,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-11-28 02:32:20,179 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 19 [2019-11-28 02:32:20,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:32:20,179 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-11-28 02:32:20,180 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-28 02:32:20,180 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2019-11-28 02:32:20,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-28 02:32:20,180 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:32:20,181 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:32:20,385 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:32:20,385 INFO L410 AbstractCegarLoop]: === Iteration 6 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:32:20,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:32:20,386 INFO L82 PathProgramCache]: Analyzing trace with hash 2125510050, now seen corresponding path program 1 times [2019-11-28 02:32:20,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:32:20,387 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151577331] [2019-11-28 02:32:20,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:32:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:20,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:32:20,595 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151577331] [2019-11-28 02:32:20,595 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054597486] [2019-11-28 02:32:20,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:32:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:20,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-28 02:32:20,714 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:32:20,723 INFO L377 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 [2019-11-28 02:32:20,723 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:32:20,731 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:32:20,731 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:32:20,732 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-28 02:32:20,757 INFO L377 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 13 treesize of output 9 [2019-11-28 02:32:20,757 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:32:20,761 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:32:20,762 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:32:20,762 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:9 [2019-11-28 02:32:20,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:32:20,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:32:20,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2019-11-28 02:32:20,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760208766] [2019-11-28 02:32:20,791 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-28 02:32:20,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:32:20,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-28 02:32:20,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-11-28 02:32:20,792 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 12 states. [2019-11-28 02:32:21,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:32:21,173 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2019-11-28 02:32:21,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-28 02:32:21,174 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2019-11-28 02:32:21,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:32:21,176 INFO L225 Difference]: With dead ends: 68 [2019-11-28 02:32:21,176 INFO L226 Difference]: Without dead ends: 68 [2019-11-28 02:32:21,177 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2019-11-28 02:32:21,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-28 02:32:21,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 52. [2019-11-28 02:32:21,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-11-28 02:32:21,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2019-11-28 02:32:21,188 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 24 [2019-11-28 02:32:21,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:32:21,188 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2019-11-28 02:32:21,188 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-28 02:32:21,189 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2019-11-28 02:32:21,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-28 02:32:21,189 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:32:21,189 INFO L410 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] [2019-11-28 02:32:21,395 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:32:21,396 INFO L410 AbstractCegarLoop]: === Iteration 7 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:32:21,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:32:21,397 INFO L82 PathProgramCache]: Analyzing trace with hash 2125031501, now seen corresponding path program 1 times [2019-11-28 02:32:21,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:32:21,398 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173092652] [2019-11-28 02:32:21,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:32:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:21,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 02:32:21,497 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173092652] [2019-11-28 02:32:21,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:32:21,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 02:32:21,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630302260] [2019-11-28 02:32:21,498 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:32:21,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:32:21,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:32:21,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:32:21,499 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 5 states. [2019-11-28 02:32:21,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:32:21,549 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2019-11-28 02:32:21,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:32:21,549 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-11-28 02:32:21,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:32:21,550 INFO L225 Difference]: With dead ends: 51 [2019-11-28 02:32:21,550 INFO L226 Difference]: Without dead ends: 29 [2019-11-28 02:32:21,551 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:32:21,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-28 02:32:21,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-28 02:32:21,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-28 02:32:21,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2019-11-28 02:32:21,554 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 24 [2019-11-28 02:32:21,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:32:21,554 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2019-11-28 02:32:21,554 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:32:21,554 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2019-11-28 02:32:21,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-28 02:32:21,555 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:32:21,555 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:32:21,555 INFO L410 AbstractCegarLoop]: === Iteration 8 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:32:21,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:32:21,556 INFO L82 PathProgramCache]: Analyzing trace with hash -912322497, now seen corresponding path program 2 times [2019-11-28 02:32:21,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:32:21,556 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893730445] [2019-11-28 02:32:21,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:32:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:21,947 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:32:21,947 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893730445] [2019-11-28 02:32:21,948 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713478106] [2019-11-28 02:32:21,948 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:32:22,041 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 02:32:22,042 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:32:22,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 45 conjunts are in the unsatisfiable core [2019-11-28 02:32:22,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:32:22,081 INFO L377 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 [2019-11-28 02:32:22,081 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:32:22,089 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:32:22,089 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:32:22,090 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2019-11-28 02:32:22,462 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:32:22,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:32:22,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 24 [2019-11-28 02:32:22,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169769634] [2019-11-28 02:32:22,463 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-11-28 02:32:22,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:32:22,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-11-28 02:32:22,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-11-28 02:32:22,464 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 25 states. [2019-11-28 02:32:23,335 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2019-11-28 02:32:23,942 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2019-11-28 02:32:24,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:32:24,376 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2019-11-28 02:32:24,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-28 02:32:24,377 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28 [2019-11-28 02:32:24,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:32:24,378 INFO L225 Difference]: With dead ends: 59 [2019-11-28 02:32:24,378 INFO L226 Difference]: Without dead ends: 59 [2019-11-28 02:32:24,379 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=238, Invalid=1568, Unknown=0, NotChecked=0, Total=1806 [2019-11-28 02:32:24,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-28 02:32:24,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34. [2019-11-28 02:32:24,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-28 02:32:24,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2019-11-28 02:32:24,383 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 28 [2019-11-28 02:32:24,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:32:24,383 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2019-11-28 02:32:24,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-11-28 02:32:24,384 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2019-11-28 02:32:24,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-28 02:32:24,384 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:32:24,385 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:32:24,588 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:32:24,588 INFO L410 AbstractCegarLoop]: === Iteration 9 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:32:24,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:32:24,589 INFO L82 PathProgramCache]: Analyzing trace with hash 407669787, now seen corresponding path program 3 times [2019-11-28 02:32:24,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:32:24,589 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083879999] [2019-11-28 02:32:24,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:32:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:24,768 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:32:24,769 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083879999] [2019-11-28 02:32:24,769 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679346795] [2019-11-28 02:32:24,769 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:32:24,870 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-28 02:32:24,871 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:32:24,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 35 conjunts are in the unsatisfiable core [2019-11-28 02:32:24,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:32:24,884 INFO L377 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 [2019-11-28 02:32:24,884 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:32:24,890 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:32:24,890 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:32:24,890 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-28 02:32:25,063 INFO L377 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 18 treesize of output 12 [2019-11-28 02:32:25,064 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:32:25,067 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:32:25,067 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:32:25,068 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:9 [2019-11-28 02:32:25,180 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:32:25,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:32:25,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 24 [2019-11-28 02:32:25,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093434651] [2019-11-28 02:32:25,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-28 02:32:25,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:32:25,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-28 02:32:25,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=503, Unknown=0, NotChecked=0, Total=552 [2019-11-28 02:32:25,182 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 24 states. [2019-11-28 02:32:26,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:32:26,375 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2019-11-28 02:32:26,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-28 02:32:26,375 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 33 [2019-11-28 02:32:26,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:32:26,376 INFO L225 Difference]: With dead ends: 54 [2019-11-28 02:32:26,376 INFO L226 Difference]: Without dead ends: 41 [2019-11-28 02:32:26,377 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=180, Invalid=1302, Unknown=0, NotChecked=0, Total=1482 [2019-11-28 02:32:26,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-28 02:32:26,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2019-11-28 02:32:26,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-28 02:32:26,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2019-11-28 02:32:26,381 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 33 [2019-11-28 02:32:26,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:32:26,381 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2019-11-28 02:32:26,381 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-28 02:32:26,381 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2019-11-28 02:32:26,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-28 02:32:26,383 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:32:26,383 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:32:26,591 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:32:26,592 INFO L410 AbstractCegarLoop]: === Iteration 10 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:32:26,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:32:26,593 INFO L82 PathProgramCache]: Analyzing trace with hash -605171170, now seen corresponding path program 4 times [2019-11-28 02:32:26,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:32:26,594 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882199834] [2019-11-28 02:32:26,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:32:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:32:27,127 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:32:27,127 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882199834] [2019-11-28 02:32:27,128 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179266601] [2019-11-28 02:32:27,128 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:32:27,226 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-28 02:32:27,227 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:32:27,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 47 conjunts are in the unsatisfiable core [2019-11-28 02:32:27,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:32:31,878 WARN L192 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 22 [2019-11-28 02:32:33,970 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-28 02:32:33,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:32:33,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 30 [2019-11-28 02:32:33,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253442723] [2019-11-28 02:32:33,972 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-11-28 02:32:33,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:32:33,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-11-28 02:32:33,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=852, Unknown=2, NotChecked=0, Total=930 [2019-11-28 02:32:33,973 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 31 states. [2019-11-28 02:32:34,816 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2019-11-28 02:32:35,170 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2019-11-28 02:32:46,298 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2019-11-28 02:32:46,584 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2019-11-28 02:32:47,415 WARN L192 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 40 [2019-11-28 02:32:47,672 WARN L192 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2019-11-28 02:32:47,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:32:47,681 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2019-11-28 02:32:47,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-11-28 02:32:47,682 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 37 [2019-11-28 02:32:47,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:32:47,682 INFO L225 Difference]: With dead ends: 63 [2019-11-28 02:32:47,682 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 02:32:47,688 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=447, Invalid=3209, Unknown=4, NotChecked=0, Total=3660 [2019-11-28 02:32:47,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 02:32:47,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 02:32:47,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 02:32:47,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 02:32:47,689 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2019-11-28 02:32:47,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:32:47,689 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:32:47,689 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-11-28 02:32:47,689 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 02:32:47,690 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 02:32:47,893 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:32:47,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:32:47 BoogieIcfgContainer [2019-11-28 02:32:47,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:32:47,901 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:32:47,901 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:32:47,901 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:32:47,902 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:32:17" (3/4) ... [2019-11-28 02:32:47,905 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 02:32:47,910 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-11-28 02:32:47,911 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cmemrchr [2019-11-28 02:32:47,911 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2019-11-28 02:32:47,911 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2019-11-28 02:32:47,911 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2019-11-28 02:32:47,911 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2019-11-28 02:32:47,911 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-11-28 02:32:47,912 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2019-11-28 02:32:47,916 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2019-11-28 02:32:47,917 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-28 02:32:47,917 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 02:32:47,970 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 02:32:47,973 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:32:47,974 INFO L168 Benchmark]: Toolchain (without parser) took 32072.24 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 341.3 MB). Free memory was 957.7 MB in the beginning and 1.2 GB in the end (delta: -240.9 MB). Peak memory consumption was 100.4 MB. Max. memory is 11.5 GB. [2019-11-28 02:32:47,975 INFO L168 Benchmark]: CDTParser took 1.70 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:32:47,976 INFO L168 Benchmark]: CACSL2BoogieTranslator took 590.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -180.0 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. [2019-11-28 02:32:47,976 INFO L168 Benchmark]: Boogie Preprocessor took 79.60 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: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 11.5 GB. [2019-11-28 02:32:47,977 INFO L168 Benchmark]: RCFGBuilder took 606.64 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: 43.8 MB). Peak memory consumption was 43.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:32:47,978 INFO L168 Benchmark]: TraceAbstraction took 30718.11 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 192.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -119.7 MB). Peak memory consumption was 72.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:32:47,978 INFO L168 Benchmark]: Witness Printer took 72.09 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 11.5 GB. [2019-11-28 02:32:47,981 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.70 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 590.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -180.0 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 79.60 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: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 606.64 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: 43.8 MB). Peak memory consumption was 43.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 30718.11 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 192.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -119.7 MB). Peak memory consumption was 72.7 MB. Max. memory is 11.5 GB. * Witness Printer took 72.09 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 527]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 49 locations, 5 error locations. Result: SAFE, OverallTime: 30.6s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 18.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 204 SDtfs, 531 SDslu, 601 SDs, 0 SdLazy, 2156 SolverSat, 168 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 8.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 336 GetRequests, 129 SyntacticMatches, 6 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 18.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 56 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 9.8s InterpolantComputationTime, 377 NumberOfCodeBlocks, 377 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 361 ConstructedInterpolants, 2 QuantifiedInterpolants, 84904 SizeOfPredicates, 50 NumberOfNonLiveVariables, 789 ConjunctsInSsa, 187 ConjunctsInUnsatCore, 16 InterpolantComputations, 5 PerfectInterpolantSequences, 25/108 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...