./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-properties/simple-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/list-properties/simple-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 17ff5ae56efea2deac29e7fa779d53a24810a7c7 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-properties/simple-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 17ff5ae56efea2deac29e7fa779d53a24810a7c7 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:42:22,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:42:22,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:42:22,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:42:22,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:42:22,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:42:22,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:42:22,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:42:22,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:42:22,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:42:22,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:42:22,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:42:22,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:42:22,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:42:22,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:42:22,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:42:22,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:42:22,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:42:22,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:42:22,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:42:22,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:42:22,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:42:22,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:42:22,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:42:22,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:42:22,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:42:22,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:42:22,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:42:22,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:42:22,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:42:22,579 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:42:22,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:42:22,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:42:22,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:42:22,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:42:22,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:42:22,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:42:22,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:42:22,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:42:22,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:42:22,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:42:22,589 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-28 02:42:22,626 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:42:22,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:42:22,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:42:22,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:42:22,634 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:42:22,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:42:22,635 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 02:42:22,637 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:42:22,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:42:22,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 02:42:22,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:42:22,638 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 02:42:22,638 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 02:42:22,638 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 02:42:22,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:42:22,640 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 02:42:22,640 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 02:42:22,640 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:42:22,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:42:22,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:42:22,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:42:22,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:42:22,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:42:22,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:42:22,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:42:22,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:42:22,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 02:42:22,644 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 -> 17ff5ae56efea2deac29e7fa779d53a24810a7c7 [2019-11-28 02:42:23,013 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:42:23,036 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:42:23,040 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:42:23,042 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:42:23,042 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:42:23,043 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/simple-2.i [2019-11-28 02:42:23,121 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9383a11ce/353395f6f9c04812b57f48ef95e633cb/FLAG38d51f7b1 [2019-11-28 02:42:23,625 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:42:23,626 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/simple-2.i [2019-11-28 02:42:23,639 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9383a11ce/353395f6f9c04812b57f48ef95e633cb/FLAG38d51f7b1 [2019-11-28 02:42:23,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9383a11ce/353395f6f9c04812b57f48ef95e633cb [2019-11-28 02:42:23,955 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:42:23,957 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 02:42:23,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:42:23,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:42:23,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:42:23,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:42:23" (1/1) ... [2019-11-28 02:42:23,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245e5474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:23, skipping insertion in model container [2019-11-28 02:42:23,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:42:23" (1/1) ... [2019-11-28 02:42:23,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:42:24,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:42:24,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:42:24,480 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:42:24,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:42:24,605 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:42:24,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:24 WrapperNode [2019-11-28 02:42:24,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:42:24,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:42:24,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:42:24,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:42:24,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:24" (1/1) ... [2019-11-28 02:42:24,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:24" (1/1) ... [2019-11-28 02:42:24,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:24" (1/1) ... [2019-11-28 02:42:24,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:24" (1/1) ... [2019-11-28 02:42:24,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:24" (1/1) ... [2019-11-28 02:42:24,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:24" (1/1) ... [2019-11-28 02:42:24,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:24" (1/1) ... [2019-11-28 02:42:24,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:42:24,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:42:24,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:42:24,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:42:24,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:24" (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 02:42:24,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 02:42:24,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:42:24,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-28 02:42:24,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-28 02:42:24,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-28 02:42:24,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-28 02:42:24,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-28 02:42:24,777 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-28 02:42:24,778 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 02:42:24,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-28 02:42:24,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-28 02:42:24,778 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-28 02:42:24,778 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-28 02:42:24,779 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-28 02:42:24,779 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-28 02:42:24,779 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-28 02:42:24,779 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-28 02:42:24,780 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-28 02:42:24,780 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-28 02:42:24,780 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-28 02:42:24,780 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-28 02:42:24,780 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-28 02:42:24,781 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-28 02:42:24,781 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-28 02:42:24,781 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-28 02:42:24,781 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-28 02:42:24,782 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-28 02:42:24,782 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-28 02:42:24,782 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-28 02:42:24,782 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-28 02:42:24,782 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-28 02:42:24,783 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-28 02:42:24,783 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-28 02:42:24,783 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-28 02:42:24,783 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-28 02:42:24,784 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-28 02:42:24,784 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-28 02:42:24,784 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-28 02:42:24,784 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-28 02:42:24,784 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-28 02:42:24,784 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-28 02:42:24,784 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-28 02:42:24,785 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-28 02:42:24,785 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-28 02:42:24,785 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-28 02:42:24,785 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-28 02:42:24,785 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-28 02:42:24,785 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-28 02:42:24,786 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-28 02:42:24,786 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-28 02:42:24,786 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-28 02:42:24,786 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-28 02:42:24,786 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-28 02:42:24,786 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-28 02:42:24,787 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-28 02:42:24,787 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-28 02:42:24,787 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-28 02:42:24,787 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-28 02:42:24,787 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-28 02:42:24,787 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-28 02:42:24,788 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-28 02:42:24,788 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-28 02:42:24,788 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-28 02:42:24,788 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-28 02:42:24,788 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-28 02:42:24,788 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-28 02:42:24,788 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-28 02:42:24,788 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-28 02:42:24,789 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-28 02:42:24,789 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-28 02:42:24,789 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-28 02:42:24,789 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-28 02:42:24,789 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-28 02:42:24,790 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-28 02:42:24,790 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-28 02:42:24,790 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-28 02:42:24,790 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-28 02:42:24,790 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-28 02:42:24,791 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-28 02:42:24,791 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-28 02:42:24,791 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-28 02:42:24,792 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-28 02:42:24,792 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-28 02:42:24,792 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-28 02:42:24,792 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-28 02:42:24,792 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-28 02:42:24,792 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-28 02:42:24,792 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-28 02:42:24,793 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-28 02:42:24,793 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-28 02:42:24,793 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-28 02:42:24,793 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-28 02:42:24,793 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-28 02:42:24,793 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-28 02:42:24,793 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-28 02:42:24,793 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-28 02:42:24,793 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-28 02:42:24,794 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-28 02:42:24,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-28 02:42:24,794 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-28 02:42:24,794 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-28 02:42:24,794 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-28 02:42:24,794 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-28 02:42:24,794 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-28 02:42:24,794 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-28 02:42:24,794 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-28 02:42:24,795 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-28 02:42:24,795 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-28 02:42:24,795 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-28 02:42:24,795 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-28 02:42:24,795 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-28 02:42:24,795 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-28 02:42:24,795 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-28 02:42:24,795 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-28 02:42:24,795 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-28 02:42:24,796 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-28 02:42:24,796 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-28 02:42:24,796 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-28 02:42:24,796 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-28 02:42:24,796 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 02:42:24,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 02:42:24,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 02:42:24,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-28 02:42:24,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-28 02:42:24,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 02:42:24,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 02:42:24,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:42:24,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 02:42:25,116 INFO L712 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-28 02:42:25,341 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:42:25,342 INFO L297 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-28 02:42:25,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:42:25 BoogieIcfgContainer [2019-11-28 02:42:25,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:42:25,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:42:25,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:42:25,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:42:25,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:42:23" (1/3) ... [2019-11-28 02:42:25,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b3704e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:42:25, skipping insertion in model container [2019-11-28 02:42:25,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:24" (2/3) ... [2019-11-28 02:42:25,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b3704e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:42:25, skipping insertion in model container [2019-11-28 02:42:25,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:42:25" (3/3) ... [2019-11-28 02:42:25,352 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-2.i [2019-11-28 02:42:25,362 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:42:25,370 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2019-11-28 02:42:25,382 INFO L249 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2019-11-28 02:42:25,403 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:42:25,404 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 02:42:25,404 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:42:25,404 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:42:25,404 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:42:25,405 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:42:25,405 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:42:25,405 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:42:25,421 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2019-11-28 02:42:25,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 02:42:25,431 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:25,432 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:25,433 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:42:25,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:25,439 INFO L82 PathProgramCache]: Analyzing trace with hash 578856491, now seen corresponding path program 1 times [2019-11-28 02:42:25,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:42:25,448 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332819418] [2019-11-28 02:42:25,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:42:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:25,629 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 02:42:25,630 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332819418] [2019-11-28 02:42:25,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:25,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:42:25,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416089545] [2019-11-28 02:42:25,637 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 02:42:25,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:42:25,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 02:42:25,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:42:25,657 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 3 states. [2019-11-28 02:42:25,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:25,797 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2019-11-28 02:42:25,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 02:42:25,800 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-28 02:42:25,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:25,809 INFO L225 Difference]: With dead ends: 50 [2019-11-28 02:42:25,809 INFO L226 Difference]: Without dead ends: 43 [2019-11-28 02:42:25,811 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:42:25,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-28 02:42:25,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-11-28 02:42:25,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-28 02:42:25,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2019-11-28 02:42:25,856 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 10 [2019-11-28 02:42:25,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:25,856 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2019-11-28 02:42:25,856 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 02:42:25,856 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2019-11-28 02:42:25,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 02:42:25,857 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:25,857 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:25,858 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:42:25,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:25,858 INFO L82 PathProgramCache]: Analyzing trace with hash 764657291, now seen corresponding path program 1 times [2019-11-28 02:42:25,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:42:25,859 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992699811] [2019-11-28 02:42:25,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:42:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:25,983 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 02:42:25,984 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992699811] [2019-11-28 02:42:25,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:25,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 02:42:25,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335533223] [2019-11-28 02:42:25,986 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:42:25,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:42:25,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:42:25,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:42:25,987 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 5 states. [2019-11-28 02:42:26,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:26,185 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2019-11-28 02:42:26,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:42:26,186 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-28 02:42:26,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:26,187 INFO L225 Difference]: With dead ends: 51 [2019-11-28 02:42:26,188 INFO L226 Difference]: Without dead ends: 51 [2019-11-28 02:42:26,189 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:42:26,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-28 02:42:26,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2019-11-28 02:42:26,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-28 02:42:26,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2019-11-28 02:42:26,196 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 11 [2019-11-28 02:42:26,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:26,197 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2019-11-28 02:42:26,197 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:42:26,197 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2019-11-28 02:42:26,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 02:42:26,198 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:26,198 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:26,199 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:42:26,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:26,199 INFO L82 PathProgramCache]: Analyzing trace with hash 764657292, now seen corresponding path program 1 times [2019-11-28 02:42:26,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:42:26,200 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570605464] [2019-11-28 02:42:26,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:42:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:26,319 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 02:42:26,319 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570605464] [2019-11-28 02:42:26,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:26,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 02:42:26,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771618464] [2019-11-28 02:42:26,321 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:42:26,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:42:26,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:42:26,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:42:26,323 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 5 states. [2019-11-28 02:42:26,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:26,520 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2019-11-28 02:42:26,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:42:26,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-28 02:42:26,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:26,522 INFO L225 Difference]: With dead ends: 60 [2019-11-28 02:42:26,522 INFO L226 Difference]: Without dead ends: 60 [2019-11-28 02:42:26,523 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:42:26,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-11-28 02:42:26,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2019-11-28 02:42:26,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-11-28 02:42:26,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2019-11-28 02:42:26,530 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 11 [2019-11-28 02:42:26,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:26,531 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2019-11-28 02:42:26,531 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:42:26,531 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2019-11-28 02:42:26,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 02:42:26,532 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:26,532 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:26,533 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:42:26,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:26,534 INFO L82 PathProgramCache]: Analyzing trace with hash 2109784215, now seen corresponding path program 1 times [2019-11-28 02:42:26,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:42:26,534 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433866673] [2019-11-28 02:42:26,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:42:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:26,656 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 02:42:26,656 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433866673] [2019-11-28 02:42:26,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:26,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-28 02:42:26,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102219921] [2019-11-28 02:42:26,660 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 02:42:26,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:42:26,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 02:42:26,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:42:26,663 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 6 states. [2019-11-28 02:42:26,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:26,798 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2019-11-28 02:42:26,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:42:26,798 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-28 02:42:26,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:26,800 INFO L225 Difference]: With dead ends: 57 [2019-11-28 02:42:26,800 INFO L226 Difference]: Without dead ends: 57 [2019-11-28 02:42:26,801 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-28 02:42:26,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-11-28 02:42:26,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2019-11-28 02:42:26,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-11-28 02:42:26,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2019-11-28 02:42:26,807 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 16 [2019-11-28 02:42:26,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:26,808 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2019-11-28 02:42:26,808 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 02:42:26,808 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2019-11-28 02:42:26,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-28 02:42:26,809 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:26,810 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:26,810 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:42:26,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:26,811 INFO L82 PathProgramCache]: Analyzing trace with hash 978842128, now seen corresponding path program 1 times [2019-11-28 02:42:26,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:42:26,811 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149591015] [2019-11-28 02:42:26,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:42:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:26,928 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 02:42:26,928 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149591015] [2019-11-28 02:42:26,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:26,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-28 02:42:26,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611462201] [2019-11-28 02:42:26,930 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 02:42:26,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:42:26,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 02:42:26,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-28 02:42:26,931 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 8 states. [2019-11-28 02:42:27,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:27,171 INFO L93 Difference]: Finished difference Result 89 states and 92 transitions. [2019-11-28 02:42:27,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 02:42:27,172 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2019-11-28 02:42:27,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:27,173 INFO L225 Difference]: With dead ends: 89 [2019-11-28 02:42:27,173 INFO L226 Difference]: Without dead ends: 89 [2019-11-28 02:42:27,174 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-28 02:42:27,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2019-11-28 02:42:27,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 56. [2019-11-28 02:42:27,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-28 02:42:27,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2019-11-28 02:42:27,181 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 17 [2019-11-28 02:42:27,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:27,182 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2019-11-28 02:42:27,182 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 02:42:27,182 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2019-11-28 02:42:27,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-28 02:42:27,183 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:27,183 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:27,183 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:42:27,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:27,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1500988158, now seen corresponding path program 1 times [2019-11-28 02:42:27,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:42:27,184 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548344330] [2019-11-28 02:42:27,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:42:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:27,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:42:27,287 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548344330] [2019-11-28 02:42:27,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:27,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-28 02:42:27,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329038941] [2019-11-28 02:42:27,288 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 02:42:27,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:42:27,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 02:42:27,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-28 02:42:27,289 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 7 states. [2019-11-28 02:42:27,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:27,527 INFO L93 Difference]: Finished difference Result 68 states and 71 transitions. [2019-11-28 02:42:27,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 02:42:27,528 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-11-28 02:42:27,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:27,529 INFO L225 Difference]: With dead ends: 68 [2019-11-28 02:42:27,529 INFO L226 Difference]: Without dead ends: 68 [2019-11-28 02:42:27,529 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-28 02:42:27,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-28 02:42:27,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 54. [2019-11-28 02:42:27,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-28 02:42:27,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2019-11-28 02:42:27,535 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 19 [2019-11-28 02:42:27,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:27,535 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2019-11-28 02:42:27,535 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 02:42:27,536 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2019-11-28 02:42:27,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-28 02:42:27,536 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:27,537 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:27,537 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:42:27,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:27,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1500988159, now seen corresponding path program 1 times [2019-11-28 02:42:27,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:42:27,538 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686044432] [2019-11-28 02:42:27,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:42:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:27,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:42:27,643 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686044432] [2019-11-28 02:42:27,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:27,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-28 02:42:27,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301410767] [2019-11-28 02:42:27,645 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 02:42:27,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:42:27,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 02:42:27,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-28 02:42:27,646 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 7 states. [2019-11-28 02:42:27,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:27,941 INFO L93 Difference]: Finished difference Result 64 states and 67 transitions. [2019-11-28 02:42:27,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 02:42:27,941 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-11-28 02:42:27,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:27,942 INFO L225 Difference]: With dead ends: 64 [2019-11-28 02:42:27,943 INFO L226 Difference]: Without dead ends: 64 [2019-11-28 02:42:27,943 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-11-28 02:42:27,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-11-28 02:42:27,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 44. [2019-11-28 02:42:27,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-28 02:42:27,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2019-11-28 02:42:27,954 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 19 [2019-11-28 02:42:27,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:27,954 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2019-11-28 02:42:27,954 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 02:42:27,955 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2019-11-28 02:42:27,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-28 02:42:27,955 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:27,956 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:27,957 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:42:27,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:27,958 INFO L82 PathProgramCache]: Analyzing trace with hash -2137255130, now seen corresponding path program 1 times [2019-11-28 02:42:27,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:42:27,958 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288156639] [2019-11-28 02:42:27,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:42:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:28,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:28,143 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 02:42:28,143 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288156639] [2019-11-28 02:42:28,144 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532932062] [2019-11-28 02:42:28,144 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 02:42:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:28,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-28 02:42:28,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:42:28,445 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-28 02:42:28,446 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:28,455 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:28,461 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-28 02:42:28,461 INFO L508 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:28,468 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:28,469 INFO L508 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:42:28,469 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2019-11-28 02:42:28,514 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-28 02:42:28,515 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:28,524 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:28,527 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-28 02:42:28,528 INFO L508 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:28,533 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:28,534 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:42:28,534 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2019-11-28 02:42:28,540 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 02:42:28,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:42:28,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 12 [2019-11-28 02:42:28,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603585568] [2019-11-28 02:42:28,543 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-28 02:42:28,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:42:28,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-28 02:42:28,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-11-28 02:42:28,544 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 12 states. [2019-11-28 02:42:28,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:28,778 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2019-11-28 02:42:28,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 02:42:28,779 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2019-11-28 02:42:28,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:28,780 INFO L225 Difference]: With dead ends: 59 [2019-11-28 02:42:28,780 INFO L226 Difference]: Without dead ends: 59 [2019-11-28 02:42:28,780 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2019-11-28 02:42:28,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-28 02:42:28,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 47. [2019-11-28 02:42:28,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-28 02:42:28,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2019-11-28 02:42:28,785 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 20 [2019-11-28 02:42:28,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:28,786 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2019-11-28 02:42:28,786 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-28 02:42:28,786 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2019-11-28 02:42:28,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-28 02:42:28,787 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:28,787 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] [2019-11-28 02:42:28,992 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:42:28,993 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:42:28,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:28,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1830400864, now seen corresponding path program 1 times [2019-11-28 02:42:28,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:42:28,995 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381867006] [2019-11-28 02:42:28,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:42:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:42:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:42:29,041 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:42:29,041 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 02:42:29,054 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-11-28 02:42:29,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:42:29 BoogieIcfgContainer [2019-11-28 02:42:29,069 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:42:29,070 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:42:29,070 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:42:29,070 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:42:29,071 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:42:25" (3/4) ... [2019-11-28 02:42:29,075 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 02:42:29,075 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:42:29,078 INFO L168 Benchmark]: Toolchain (without parser) took 5120.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.8 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -117.1 MB). Peak memory consumption was 51.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:42:29,078 INFO L168 Benchmark]: CDTParser took 1.58 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 02:42:29,079 INFO L168 Benchmark]: CACSL2BoogieTranslator took 648.82 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 78.6 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -93.9 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:42:29,080 INFO L168 Benchmark]: Boogie Preprocessor took 87.57 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-11-28 02:42:29,081 INFO L168 Benchmark]: RCFGBuilder took 648.62 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 998.2 MB in the end (delta: 46.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 11.5 GB. [2019-11-28 02:42:29,086 INFO L168 Benchmark]: TraceAbstraction took 3724.83 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 90.2 MB). Free memory was 998.2 MB in the beginning and 1.1 GB in the end (delta: -76.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2019-11-28 02:42:29,086 INFO L168 Benchmark]: Witness Printer took 5.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:42:29,097 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.58 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 648.82 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 78.6 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -93.9 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 87.57 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 648.62 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 998.2 MB in the end (delta: 46.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3724.83 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 90.2 MB). Free memory was 998.2 MB in the beginning and 1.1 GB in the end (delta: -76.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * Witness Printer took 5.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 520]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 520. Possible FailurePath: [L521] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L522] COND FALSE !(a == 0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L523] List t; [L524] List p = a; VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L525] COND FALSE !(__VERIFIER_nondet_int()) [L532] p->h = 1 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L533] p->n = 0 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L534] p = a VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L535] COND TRUE p!=0 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L536] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=1] [L536] COND FALSE !(p->h != 1) [L539] EXPR p->n VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->n={0:0}] [L539] p = p->n [L535] COND FALSE !(p!=0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={0:0}] [L541] return 0; VAL [\result=0, a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={0:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 66 locations, 16 error locations. Result: UNSAFE, OverallTime: 3.6s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 233 SDtfs, 531 SDslu, 398 SDs, 0 SdLazy, 890 SolverSat, 87 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=5, 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, 8 MinimizatonAttempts, 98 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 134 ConstructedInterpolants, 0 QuantifiedInterpolants, 12426 SizeOfPredicates, 11 NumberOfNonLiveVariables, 94 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 6/8 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:42:31,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:42:31,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:42:31,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:42:31,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:42:31,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:42:31,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:42:31,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:42:31,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:42:31,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:42:31,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:42:31,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:42:31,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:42:31,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:42:31,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:42:31,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:42:31,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:42:31,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:42:31,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:42:31,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:42:31,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:42:31,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:42:31,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:42:31,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:42:31,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:42:31,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:42:31,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:42:31,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:42:31,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:42:31,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:42:31,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:42:31,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:42:31,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:42:31,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:42:31,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:42:31,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:42:31,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:42:31,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:42:31,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:42:31,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:42:31,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:42:31,153 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-28 02:42:31,175 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:42:31,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:42:31,178 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:42:31,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:42:31,178 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:42:31,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:42:31,179 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 02:42:31,179 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:42:31,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:42:31,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 02:42:31,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:42:31,180 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 02:42:31,181 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 02:42:31,181 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 02:42:31,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:42:31,182 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 02:42:31,182 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 02:42:31,182 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 02:42:31,182 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 02:42:31,182 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:42:31,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:42:31,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:42:31,183 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:42:31,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:42:31,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:42:31,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:42:31,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:42:31,184 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 02:42:31,184 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 02:42:31,184 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 02:42:31,185 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17ff5ae56efea2deac29e7fa779d53a24810a7c7 [2019-11-28 02:42:31,551 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:42:31,564 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:42:31,567 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:42:31,569 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:42:31,570 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:42:31,570 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/simple-2.i [2019-11-28 02:42:31,632 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/214cf4bb7/c548d5ca00a94c79b9d8ee858b31e521/FLAG8c5df750b [2019-11-28 02:42:32,181 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:42:32,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/simple-2.i [2019-11-28 02:42:32,200 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/214cf4bb7/c548d5ca00a94c79b9d8ee858b31e521/FLAG8c5df750b [2019-11-28 02:42:32,436 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/214cf4bb7/c548d5ca00a94c79b9d8ee858b31e521 [2019-11-28 02:42:32,440 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:42:32,442 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 02:42:32,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:42:32,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:42:32,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:42:32,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:42:32" (1/1) ... [2019-11-28 02:42:32,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b3eb5ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:32, skipping insertion in model container [2019-11-28 02:42:32,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:42:32" (1/1) ... [2019-11-28 02:42:32,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:42:32,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:42:32,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:42:32,937 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:42:33,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:42:33,077 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:42:33,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:33 WrapperNode [2019-11-28 02:42:33,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:42:33,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:42:33,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:42:33,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:42:33,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:33" (1/1) ... [2019-11-28 02:42:33,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:33" (1/1) ... [2019-11-28 02:42:33,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:33" (1/1) ... [2019-11-28 02:42:33,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:33" (1/1) ... [2019-11-28 02:42:33,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:33" (1/1) ... [2019-11-28 02:42:33,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:33" (1/1) ... [2019-11-28 02:42:33,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:33" (1/1) ... [2019-11-28 02:42:33,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:42:33,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:42:33,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:42:33,178 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:42:33,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:33" (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 02:42:33,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 02:42:33,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:42:33,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2019-11-28 02:42:33,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-28 02:42:33,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-28 02:42:33,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-28 02:42:33,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-28 02:42:33,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-28 02:42:33,245 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-28 02:42:33,245 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 02:42:33,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-28 02:42:33,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-28 02:42:33,246 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-28 02:42:33,246 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-28 02:42:33,246 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-28 02:42:33,246 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-28 02:42:33,247 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-28 02:42:33,247 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-28 02:42:33,247 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-28 02:42:33,247 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-28 02:42:33,248 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-28 02:42:33,248 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-28 02:42:33,248 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-28 02:42:33,251 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-28 02:42:33,251 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-28 02:42:33,251 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-28 02:42:33,252 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-28 02:42:33,252 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-28 02:42:33,252 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-28 02:42:33,252 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-28 02:42:33,252 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-28 02:42:33,252 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-28 02:42:33,252 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-28 02:42:33,253 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-28 02:42:33,253 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-28 02:42:33,253 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-28 02:42:33,253 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-28 02:42:33,253 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-28 02:42:33,253 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-28 02:42:33,253 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-28 02:42:33,254 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-28 02:42:33,254 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-28 02:42:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-28 02:42:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-28 02:42:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-28 02:42:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-28 02:42:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-28 02:42:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-28 02:42:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-28 02:42:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-28 02:42:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-28 02:42:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-28 02:42:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-28 02:42:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-28 02:42:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-28 02:42:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-28 02:42:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-28 02:42:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-28 02:42:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-28 02:42:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-28 02:42:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-28 02:42:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-28 02:42:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-28 02:42:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-28 02:42:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-28 02:42:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-28 02:42:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-28 02:42:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-28 02:42:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-28 02:42:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-28 02:42:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-28 02:42:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-28 02:42:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-28 02:42:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-28 02:42:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-28 02:42:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-28 02:42:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-28 02:42:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-28 02:42:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-28 02:42:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-28 02:42:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-28 02:42:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-28 02:42:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-28 02:42:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-28 02:42:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-28 02:42:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-28 02:42:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-28 02:42:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-28 02:42:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-28 02:42:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-28 02:42:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-28 02:42:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-28 02:42:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-28 02:42:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-28 02:42:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-28 02:42:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-28 02:42:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-28 02:42:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-28 02:42:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-28 02:42:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-28 02:42:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-28 02:42:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-28 02:42:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-28 02:42:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-28 02:42:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-28 02:42:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-28 02:42:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-28 02:42:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-28 02:42:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-28 02:42:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-28 02:42:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-28 02:42:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-28 02:42:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-28 02:42:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-28 02:42:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-28 02:42:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-28 02:42:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-28 02:42:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-28 02:42:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-28 02:42:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-28 02:42:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 02:42:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 02:42:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-28 02:42:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-28 02:42:33,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-28 02:42:33,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-28 02:42:33,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 02:42:33,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:42:33,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2019-11-28 02:42:33,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 02:42:33,661 INFO L712 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-28 02:42:33,884 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:42:33,885 INFO L297 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-28 02:42:33,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:42:33 BoogieIcfgContainer [2019-11-28 02:42:33,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:42:33,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:42:33,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:42:33,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:42:33,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:42:32" (1/3) ... [2019-11-28 02:42:33,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d34ddcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:42:33, skipping insertion in model container [2019-11-28 02:42:33,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:33" (2/3) ... [2019-11-28 02:42:33,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d34ddcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:42:33, skipping insertion in model container [2019-11-28 02:42:33,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:42:33" (3/3) ... [2019-11-28 02:42:33,896 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-2.i [2019-11-28 02:42:33,907 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:42:33,915 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2019-11-28 02:42:33,928 INFO L249 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2019-11-28 02:42:33,950 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:42:33,950 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 02:42:33,950 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:42:33,951 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:42:33,951 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:42:33,951 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:42:33,951 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:42:33,952 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:42:33,967 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2019-11-28 02:42:33,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 02:42:33,978 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:33,979 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:33,980 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:42:33,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:33,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1404783650, now seen corresponding path program 1 times [2019-11-28 02:42:33,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 02:42:33,999 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [340173652] [2019-11-28 02:42:34,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-28 02:42:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:34,144 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:42:34,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:42:34,230 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 02:42:34,230 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:34,241 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:34,242 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:42:34,242 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-28 02:42:34,267 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 02:42:34,268 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 02:42:34,284 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 02:42:34,285 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [340173652] [2019-11-28 02:42:34,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:34,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-28 02:42:34,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102886290] [2019-11-28 02:42:34,293 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:42:34,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 02:42:34,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:42:34,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:42:34,313 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 4 states. [2019-11-28 02:42:34,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:34,542 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2019-11-28 02:42:34,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:42:34,544 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-28 02:42:34,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:34,553 INFO L225 Difference]: With dead ends: 57 [2019-11-28 02:42:34,553 INFO L226 Difference]: Without dead ends: 49 [2019-11-28 02:42:34,555 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:42:34,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-28 02:42:34,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2019-11-28 02:42:34,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-28 02:42:34,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2019-11-28 02:42:34,596 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 10 [2019-11-28 02:42:34,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:34,596 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2019-11-28 02:42:34,596 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:42:34,596 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2019-11-28 02:42:34,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 02:42:34,597 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:34,597 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:34,808 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 02:42:34,809 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:42:34,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:34,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1404783651, now seen corresponding path program 1 times [2019-11-28 02:42:34,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 02:42:34,811 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [982365492] [2019-11-28 02:42:34,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-28 02:42:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:34,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 02:42:34,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:42:34,944 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 02:42:34,944 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:34,955 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:34,956 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:42:34,956 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-28 02:42:34,984 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 02:42:34,984 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 02:42:35,099 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 02:42:35,101 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [982365492] [2019-11-28 02:42:35,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:35,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-28 02:42:35,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393662491] [2019-11-28 02:42:35,104 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 02:42:35,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 02:42:35,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 02:42:35,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:42:35,109 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 6 states. [2019-11-28 02:42:35,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:35,522 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2019-11-28 02:42:35,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:42:35,524 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-11-28 02:42:35,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:35,525 INFO L225 Difference]: With dead ends: 58 [2019-11-28 02:42:35,526 INFO L226 Difference]: Without dead ends: 58 [2019-11-28 02:42:35,527 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-28 02:42:35,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-11-28 02:42:35,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2019-11-28 02:42:35,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-28 02:42:35,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2019-11-28 02:42:35,534 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 10 [2019-11-28 02:42:35,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:35,535 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2019-11-28 02:42:35,535 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 02:42:35,535 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2019-11-28 02:42:35,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 02:42:35,536 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:35,536 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:35,748 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-28 02:42:35,748 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:42:35,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:35,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1238965195, now seen corresponding path program 1 times [2019-11-28 02:42:35,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 02:42:35,750 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450130507] [2019-11-28 02:42:35,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-28 02:42:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:35,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:42:35,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:42:35,904 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 02:42:35,904 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 02:42:35,917 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 02:42:35,918 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450130507] [2019-11-28 02:42:35,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:35,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-28 02:42:35,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337330132] [2019-11-28 02:42:35,921 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:42:35,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 02:42:35,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:42:35,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:42:35,927 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 4 states. [2019-11-28 02:42:36,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:36,091 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2019-11-28 02:42:36,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:42:36,092 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-28 02:42:36,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:36,093 INFO L225 Difference]: With dead ends: 55 [2019-11-28 02:42:36,093 INFO L226 Difference]: Without dead ends: 55 [2019-11-28 02:42:36,096 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:42:36,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-28 02:42:36,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2019-11-28 02:42:36,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-28 02:42:36,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2019-11-28 02:42:36,110 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 15 [2019-11-28 02:42:36,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:36,111 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2019-11-28 02:42:36,111 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:42:36,111 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2019-11-28 02:42:36,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 02:42:36,114 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:36,115 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:36,325 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-28 02:42:36,326 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:42:36,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:36,327 INFO L82 PathProgramCache]: Analyzing trace with hash 246825543, now seen corresponding path program 1 times [2019-11-28 02:42:36,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 02:42:36,329 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496178516] [2019-11-28 02:42:36,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-28 02:42:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:36,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 02:42:36,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:42:36,454 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-28 02:42:36,454 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:36,465 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:36,465 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:42:36,466 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2019-11-28 02:42:36,513 INFO L343 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2019-11-28 02:42:36,514 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2019-11-28 02:42:36,515 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:36,517 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:36,518 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:42:36,518 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:9 [2019-11-28 02:42:36,541 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-28 02:42:36,542 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:36,544 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:36,544 INFO L508 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:42:36,544 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:5 [2019-11-28 02:42:36,555 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 02:42:36,555 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 02:42:36,567 INFO L508 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-28 02:42:36,572 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:36,573 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-28 02:42:36,574 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:19 [2019-11-28 02:42:36,620 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2019-11-28 02:42:36,622 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:36,712 INFO L588 ElimStorePlain]: treesize reduction 34, result has 39.3 percent of original size [2019-11-28 02:42:36,713 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-11-28 02:42:36,714 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-11-28 02:42:36,719 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 02:42:36,719 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496178516] [2019-11-28 02:42:36,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:36,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2019-11-28 02:42:36,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514203691] [2019-11-28 02:42:36,720 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 02:42:36,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 02:42:36,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 02:42:36,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-11-28 02:42:36,721 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 8 states. [2019-11-28 02:42:37,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:37,146 INFO L93 Difference]: Finished difference Result 86 states and 89 transitions. [2019-11-28 02:42:37,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 02:42:37,147 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2019-11-28 02:42:37,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:37,148 INFO L225 Difference]: With dead ends: 86 [2019-11-28 02:42:37,148 INFO L226 Difference]: Without dead ends: 86 [2019-11-28 02:42:37,149 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-11-28 02:42:37,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2019-11-28 02:42:37,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 54. [2019-11-28 02:42:37,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-28 02:42:37,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2019-11-28 02:42:37,157 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 16 [2019-11-28 02:42:37,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:37,157 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2019-11-28 02:42:37,158 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 02:42:37,158 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2019-11-28 02:42:37,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-28 02:42:37,159 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:37,159 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:37,368 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-28 02:42:37,369 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:42:37,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:37,370 INFO L82 PathProgramCache]: Analyzing trace with hash -199427220, now seen corresponding path program 1 times [2019-11-28 02:42:37,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 02:42:37,371 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855292452] [2019-11-28 02:42:37,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-11-28 02:42:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:37,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 02:42:37,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:42:37,501 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 02:42:37,501 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:37,505 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:37,505 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:42:37,505 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-28 02:42:37,535 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-28 02:42:37,536 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:37,547 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:37,549 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:42:37,549 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:11 [2019-11-28 02:42:37,568 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2019-11-28 02:42:37,569 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:37,572 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:37,572 INFO L508 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:42:37,572 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:21, output treesize:5 [2019-11-28 02:42:37,597 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 02:42:37,598 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 02:42:37,620 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 02:42:37,623 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855292452] [2019-11-28 02:42:37,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:37,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-28 02:42:37,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326298875] [2019-11-28 02:42:37,624 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 02:42:37,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 02:42:37,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 02:42:37,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:42:37,624 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 6 states. [2019-11-28 02:42:37,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:37,979 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2019-11-28 02:42:37,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 02:42:37,982 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-11-28 02:42:37,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:37,984 INFO L225 Difference]: With dead ends: 66 [2019-11-28 02:42:37,984 INFO L226 Difference]: Without dead ends: 66 [2019-11-28 02:42:37,985 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-28 02:42:37,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-11-28 02:42:37,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 52. [2019-11-28 02:42:37,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-11-28 02:42:37,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2019-11-28 02:42:37,990 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 17 [2019-11-28 02:42:37,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:37,991 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2019-11-28 02:42:37,991 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 02:42:37,991 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2019-11-28 02:42:37,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-28 02:42:37,992 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:37,992 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:38,193 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-28 02:42:38,194 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:42:38,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:38,195 INFO L82 PathProgramCache]: Analyzing trace with hash -199427219, now seen corresponding path program 1 times [2019-11-28 02:42:38,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 02:42:38,196 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121388451] [2019-11-28 02:42:38,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-11-28 02:42:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:38,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-28 02:42:38,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:42:38,293 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 02:42:38,294 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:38,298 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:38,299 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:42:38,300 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-28 02:42:38,325 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-28 02:42:38,325 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:38,340 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:38,346 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-28 02:42:38,347 INFO L508 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:38,357 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:38,358 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:42:38,358 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2019-11-28 02:42:38,392 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2019-11-28 02:42:38,393 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:38,410 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:38,414 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2019-11-28 02:42:38,415 INFO L508 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:38,421 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:38,421 INFO L508 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:42:38,421 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:41, output treesize:11 [2019-11-28 02:42:38,450 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 02:42:38,451 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 02:42:38,672 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 02:42:38,673 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1121388451] [2019-11-28 02:42:38,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:42:38,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-28 02:42:38,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224052554] [2019-11-28 02:42:38,674 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 02:42:38,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 02:42:38,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 02:42:38,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-28 02:42:38,675 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 10 states. [2019-11-28 02:42:39,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:39,656 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2019-11-28 02:42:39,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-28 02:42:39,661 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2019-11-28 02:42:39,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:39,662 INFO L225 Difference]: With dead ends: 62 [2019-11-28 02:42:39,662 INFO L226 Difference]: Without dead ends: 62 [2019-11-28 02:42:39,663 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2019-11-28 02:42:39,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-11-28 02:42:39,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 42. [2019-11-28 02:42:39,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-28 02:42:39,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2019-11-28 02:42:39,667 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 17 [2019-11-28 02:42:39,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:39,667 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2019-11-28 02:42:39,667 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 02:42:39,668 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2019-11-28 02:42:39,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-28 02:42:39,668 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:39,669 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:42:39,881 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-28 02:42:39,881 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:42:39,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:39,882 INFO L82 PathProgramCache]: Analyzing trace with hash 200611076, now seen corresponding path program 1 times [2019-11-28 02:42:39,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 02:42:39,882 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670761536] [2019-11-28 02:42:39,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-11-28 02:42:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:42:39,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-28 02:42:39,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:42:39,999 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-28 02:42:39,999 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:40,011 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:40,016 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-28 02:42:40,017 INFO L508 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:40,027 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:40,028 INFO L508 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:42:40,028 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:19 [2019-11-28 02:42:40,079 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2019-11-28 02:42:40,079 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:40,089 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:40,092 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2019-11-28 02:42:40,093 INFO L508 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-28 02:42:40,097 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:42:40,098 INFO L508 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:42:40,098 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:7 [2019-11-28 02:42:40,141 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 02:42:40,143 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 02:42:40,175 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2019-11-28 02:42:40,176 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-11-28 02:42:40,200 INFO L588 ElimStorePlain]: treesize reduction 19, result has 36.7 percent of original size [2019-11-28 02:42:40,200 INFO L476 ElimStorePlain]: Eliminatee |#memory_$Pointer$.offset| vanished before elimination [2019-11-28 02:42:40,200 INFO L508 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-11-28 02:42:40,201 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:11 [2019-11-28 02:42:40,213 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 02:42:40,213 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670761536] [2019-11-28 02:42:40,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:42:40,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-11-28 02:42:40,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201782361] [2019-11-28 02:42:40,214 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 02:42:40,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 02:42:40,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 02:42:40,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-28 02:42:40,217 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 7 states. [2019-11-28 02:42:42,456 WARN L192 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 25 DAG size of output: 18 [2019-11-28 02:42:44,615 WARN L192 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 29 DAG size of output: 22 [2019-11-28 02:42:44,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:42:44,760 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2019-11-28 02:42:44,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 02:42:44,765 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-11-28 02:42:44,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:42:44,765 INFO L225 Difference]: With dead ends: 57 [2019-11-28 02:42:44,766 INFO L226 Difference]: Without dead ends: 57 [2019-11-28 02:42:44,766 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-11-28 02:42:44,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-11-28 02:42:44,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2019-11-28 02:42:44,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-28 02:42:44,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2019-11-28 02:42:44,771 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 19 [2019-11-28 02:42:44,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:42:44,771 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2019-11-28 02:42:44,771 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 02:42:44,771 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2019-11-28 02:42:44,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-28 02:42:44,772 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:42:44,772 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] [2019-11-28 02:42:44,972 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-11-28 02:42:44,973 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:42:44,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:42:44,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1923974807, now seen corresponding path program 1 times [2019-11-28 02:42:44,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 02:42:44,975 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897118916] [2019-11-28 02:42:44,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-11-28 02:42:45,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:42:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:42:45,133 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-28 02:42:45,134 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 02:42:45,334 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-11-28 02:42:45,346 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-11-28 02:42:45,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:42:45 BoogieIcfgContainer [2019-11-28 02:42:45,367 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:42:45,368 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:42:45,368 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:42:45,368 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:42:45,369 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:42:33" (3/4) ... [2019-11-28 02:42:45,375 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 02:42:45,375 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:42:45,384 INFO L168 Benchmark]: Toolchain (without parser) took 12935.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 210.8 MB). Free memory was 957.7 MB in the beginning and 931.4 MB in the end (delta: 26.3 MB). Peak memory consumption was 237.1 MB. Max. memory is 11.5 GB. [2019-11-28 02:42:45,385 INFO L168 Benchmark]: CDTParser took 0.30 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 02:42:45,387 INFO L168 Benchmark]: CACSL2BoogieTranslator took 635.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -150.4 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. [2019-11-28 02:42:45,387 INFO L168 Benchmark]: Boogie Preprocessor took 98.10 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:42:45,388 INFO L168 Benchmark]: RCFGBuilder took 709.53 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: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 11.5 GB. [2019-11-28 02:42:45,389 INFO L168 Benchmark]: TraceAbstraction took 11479.03 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 71.3 MB). Free memory was 1.1 GB in the beginning and 931.4 MB in the end (delta: 120.4 MB). Peak memory consumption was 191.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:42:45,389 INFO L168 Benchmark]: Witness Printer took 7.95 ms. Allocated memory is still 1.2 GB. Free memory is still 931.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:42:45,392 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 635.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -150.4 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 98.10 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 709.53 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: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 11479.03 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 71.3 MB). Free memory was 1.1 GB in the beginning and 931.4 MB in the end (delta: 120.4 MB). Peak memory consumption was 191.7 MB. Max. memory is 11.5 GB. * Witness Printer took 7.95 ms. Allocated memory is still 1.2 GB. Free memory is still 931.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 520]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 520. Possible FailurePath: [L521] List a = (List) malloc(sizeof(struct node)); VAL [a={1:0}, malloc(sizeof(struct node))={1:0}] [L522] COND FALSE !(a == 0) VAL [a={1:0}, malloc(sizeof(struct node))={1:0}] [L523] List t; [L524] List p = a; VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L525] COND FALSE !(__VERIFIER_nondet_int()) [L532] p->h = 1 VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L533] p->n = 0 VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L534] p = a VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L535] COND TRUE p!=0 VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L536] EXPR p->h VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=1] [L536] COND FALSE !(p->h != 1) [L539] EXPR p->n VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}, p->n={0:0}] [L539] p = p->n [L535] COND FALSE !(p!=0) VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={0:0}] [L541] return 0; VAL [\result=0, a={1:0}, malloc(sizeof(struct node))={1:0}, p={0:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 71 locations, 16 error locations. Result: UNSAFE, OverallTime: 11.3s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 191 SDtfs, 434 SDslu, 470 SDs, 0 SdLazy, 619 SolverSat, 93 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 221 GetRequests, 170 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 97 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 194 ConstructedInterpolants, 1 QuantifiedInterpolants, 14092 SizeOfPredicates, 49 NumberOfNonLiveVariables, 432 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 6/8 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...