./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 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-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 621ace555bcaba2bfc5c3f9f05e7d0c3e0e54892 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 621ace555bcaba2bfc5c3f9f05e7d0c3e0e54892 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:14:53,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:14:53,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:14:53,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:14:53,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:14:53,655 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:14:53,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:14:53,660 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:14:53,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:14:53,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:14:53,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:14:53,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:14:53,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:14:53,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:14:53,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:14:53,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:14:53,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:14:53,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:14:53,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:14:53,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:14:53,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:14:53,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:14:53,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:14:53,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:14:53,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:14:53,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:14:53,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:14:53,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:14:53,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:14:53,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:14:53,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:14:53,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:14:53,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:14:53,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:14:53,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:14:53,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:14:53,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:14:53,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:14:53,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:14:53,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:14:53,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:14:53,701 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 18:14:53,724 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:14:53,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:14:53,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:14:53,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:14:53,727 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:14:53,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:14:53,727 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:14:53,728 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:14:53,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:14:53,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:14:53,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:14:53,729 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:14:53,729 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:14:53,729 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:14:53,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:14:53,730 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:14:53,730 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:14:53,730 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:14:53,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:14:53,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:14:53,731 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:14:53,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:14:53,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:14:53,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:14:53,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:14:53,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:14:53,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:14:53,733 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:14:53,734 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 -> 621ace555bcaba2bfc5c3f9f05e7d0c3e0e54892 [2020-10-19 18:14:54,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:14:54,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:14:54,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:14:54,075 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:14:54,076 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:14:54,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/simple-2.i [2020-10-19 18:14:54,141 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dc1633d0/d6f24e65cf0b4e3a92e4990111ff43da/FLAGb2b1f4137 [2020-10-19 18:14:54,719 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:14:54,720 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/simple-2.i [2020-10-19 18:14:54,734 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dc1633d0/d6f24e65cf0b4e3a92e4990111ff43da/FLAGb2b1f4137 [2020-10-19 18:14:55,010 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dc1633d0/d6f24e65cf0b4e3a92e4990111ff43da [2020-10-19 18:14:55,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:14:55,022 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:14:55,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:14:55,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:14:55,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:14:55,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:14:55" (1/1) ... [2020-10-19 18:14:55,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@235b1a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:55, skipping insertion in model container [2020-10-19 18:14:55,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:14:55" (1/1) ... [2020-10-19 18:14:55,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:14:55,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:14:55,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:14:55,476 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:14:55,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:14:55,567 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:14:55,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:55 WrapperNode [2020-10-19 18:14:55,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:14:55,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:14:55,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:14:55,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:14:55,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:55" (1/1) ... [2020-10-19 18:14:55,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:55" (1/1) ... [2020-10-19 18:14:55,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:55" (1/1) ... [2020-10-19 18:14:55,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:55" (1/1) ... [2020-10-19 18:14:55,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:55" (1/1) ... [2020-10-19 18:14:55,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:55" (1/1) ... [2020-10-19 18:14:55,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:55" (1/1) ... [2020-10-19 18:14:55,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:14:55,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:14:55,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:14:55,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:14:55,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:14:55,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:14:55,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:14:55,710 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:14:55,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 18:14:55,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 18:14:55,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 18:14:55,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 18:14:55,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 18:14:55,712 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-19 18:14:55,712 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:14:55,713 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:14:55,713 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:14:55,714 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-19 18:14:55,714 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-19 18:14:55,714 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:14:55,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:14:55,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:14:55,717 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:14:55,717 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:14:55,717 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:14:55,718 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:14:55,718 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:14:55,719 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:14:55,719 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:14:55,719 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:14:55,720 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:14:55,721 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:14:55,721 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:14:55,721 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:14:55,722 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:14:55,722 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:14:55,722 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:14:55,722 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:14:55,722 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 18:14:55,723 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 18:14:55,723 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 18:14:55,723 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 18:14:55,723 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 18:14:55,723 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:14:55,723 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:14:55,724 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:14:55,724 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:14:55,724 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:14:55,724 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:14:55,724 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:14:55,724 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:14:55,725 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:14:55,725 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:14:55,725 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:14:55,725 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:14:55,725 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:14:55,725 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:14:55,726 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:14:55,726 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:14:55,726 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:14:55,726 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:14:55,726 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:14:55,726 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:14:55,726 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:14:55,727 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:14:55,727 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:14:55,727 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:14:55,727 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:14:55,727 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:14:55,727 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:14:55,727 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:14:55,728 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:14:55,728 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:14:55,728 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:14:55,728 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:14:55,729 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:14:55,729 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:14:55,729 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:14:55,729 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:14:55,730 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:14:55,731 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:14:55,731 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:14:55,731 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:14:55,731 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:14:55,731 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:14:55,732 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:14:55,732 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:14:55,732 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:14:55,732 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:14:55,732 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:14:55,732 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:14:55,732 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:14:55,732 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:14:55,732 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:14:55,733 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:14:55,733 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:14:55,733 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:14:55,733 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:14:55,733 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:14:55,733 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:14:55,733 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:14:55,733 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:14:55,733 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:14:55,734 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:14:55,734 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:14:55,734 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:14:55,734 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:14:55,734 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:14:55,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:14:55,734 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:14:55,734 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:14:55,734 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:14:55,735 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:14:55,735 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:14:55,735 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:14:55,735 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:14:55,735 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:14:55,735 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:14:55,735 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:14:55,736 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:14:55,736 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:14:55,736 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:14:55,736 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:14:55,736 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:14:55,736 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:14:55,736 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:14:55,737 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:14:55,737 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:14:55,737 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-19 18:14:55,738 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:14:55,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:14:55,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:14:55,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:14:55,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:14:55,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:14:55,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:14:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:14:55,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:14:55,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:14:56,139 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-19 18:14:56,324 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:14:56,324 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-19 18:14:56,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:14:56 BoogieIcfgContainer [2020-10-19 18:14:56,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:14:56,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:14:56,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:14:56,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:14:56,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:14:55" (1/3) ... [2020-10-19 18:14:56,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e61655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:14:56, skipping insertion in model container [2020-10-19 18:14:56,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:55" (2/3) ... [2020-10-19 18:14:56,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e61655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:14:56, skipping insertion in model container [2020-10-19 18:14:56,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:14:56" (3/3) ... [2020-10-19 18:14:56,335 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-2.i [2020-10-19 18:14:56,347 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:14:56,355 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-10-19 18:14:56,370 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-10-19 18:14:56,391 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:14:56,392 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:14:56,392 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:14:56,392 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:14:56,392 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:14:56,392 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:14:56,393 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:14:56,393 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:14:56,410 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-10-19 18:14:56,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 18:14:56,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:14:56,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:14:56,422 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:14:56,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:14:56,429 INFO L82 PathProgramCache]: Analyzing trace with hash -668473910, now seen corresponding path program 1 times [2020-10-19 18:14:56,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:14:56,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958724758] [2020-10-19 18:14:56,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:14:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:56,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:14:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:56,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:14:56,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958724758] [2020-10-19 18:14:56,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:14:56,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:14:56,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788413549] [2020-10-19 18:14:56,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:14:56,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:14:56,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:14:56,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:14:56,696 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 3 states. [2020-10-19 18:14:56,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:14:56,832 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2020-10-19 18:14:56,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:14:56,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-19 18:14:56,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:14:56,843 INFO L225 Difference]: With dead ends: 52 [2020-10-19 18:14:56,844 INFO L226 Difference]: Without dead ends: 45 [2020-10-19 18:14:56,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:14:56,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-19 18:14:56,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-19 18:14:56,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-19 18:14:56,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-10-19 18:14:56,889 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 10 [2020-10-19 18:14:56,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:14:56,890 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-10-19 18:14:56,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:14:56,891 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-10-19 18:14:56,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 18:14:56,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:14:56,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:14:56,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:14:56,893 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:14:56,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:14:56,893 INFO L82 PathProgramCache]: Analyzing trace with hash 752120503, now seen corresponding path program 1 times [2020-10-19 18:14:56,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:14:56,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988128575] [2020-10-19 18:14:56,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:14:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:57,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:14:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:57,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:14:57,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988128575] [2020-10-19 18:14:57,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:14:57,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:14:57,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552864309] [2020-10-19 18:14:57,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:14:57,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:14:57,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:14:57,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:14:57,037 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 5 states. [2020-10-19 18:14:57,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:14:57,241 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2020-10-19 18:14:57,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:14:57,242 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-19 18:14:57,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:14:57,246 INFO L225 Difference]: With dead ends: 72 [2020-10-19 18:14:57,247 INFO L226 Difference]: Without dead ends: 72 [2020-10-19 18:14:57,248 INFO L677 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 [2020-10-19 18:14:57,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-19 18:14:57,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 58. [2020-10-19 18:14:57,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-19 18:14:57,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2020-10-19 18:14:57,258 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 11 [2020-10-19 18:14:57,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:14:57,259 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2020-10-19 18:14:57,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:14:57,260 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-10-19 18:14:57,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 18:14:57,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:14:57,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:14:57,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:14:57,261 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:14:57,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:14:57,262 INFO L82 PathProgramCache]: Analyzing trace with hash 752120502, now seen corresponding path program 1 times [2020-10-19 18:14:57,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:14:57,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907439132] [2020-10-19 18:14:57,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:14:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:57,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:14:57,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:57,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:14:57,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907439132] [2020-10-19 18:14:57,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:14:57,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:14:57,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410122302] [2020-10-19 18:14:57,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:14:57,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:14:57,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:14:57,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:14:57,346 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 5 states. [2020-10-19 18:14:57,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:14:57,480 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2020-10-19 18:14:57,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:14:57,481 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-19 18:14:57,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:14:57,483 INFO L225 Difference]: With dead ends: 57 [2020-10-19 18:14:57,483 INFO L226 Difference]: Without dead ends: 57 [2020-10-19 18:14:57,483 INFO L677 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 [2020-10-19 18:14:57,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-19 18:14:57,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-10-19 18:14:57,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-19 18:14:57,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-10-19 18:14:57,491 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 11 [2020-10-19 18:14:57,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:14:57,491 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-10-19 18:14:57,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:14:57,492 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-10-19 18:14:57,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 18:14:57,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:14:57,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:14:57,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:14:57,494 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:14:57,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:14:57,494 INFO L82 PathProgramCache]: Analyzing trace with hash 2025061653, now seen corresponding path program 1 times [2020-10-19 18:14:57,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:14:57,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299301701] [2020-10-19 18:14:57,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:14:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:57,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:14:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:57,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:14:57,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299301701] [2020-10-19 18:14:57,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:14:57,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:14:57,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755490629] [2020-10-19 18:14:57,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:14:57,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:14:57,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:14:57,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:14:57,572 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 5 states. [2020-10-19 18:14:57,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:14:57,689 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2020-10-19 18:14:57,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:14:57,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-19 18:14:57,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:14:57,691 INFO L225 Difference]: With dead ends: 58 [2020-10-19 18:14:57,691 INFO L226 Difference]: Without dead ends: 58 [2020-10-19 18:14:57,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:14:57,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-19 18:14:57,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-10-19 18:14:57,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-19 18:14:57,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-10-19 18:14:57,699 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 16 [2020-10-19 18:14:57,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:14:57,699 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-10-19 18:14:57,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:14:57,700 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-10-19 18:14:57,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 18:14:57,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:14:57,701 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:14:57,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:14:57,702 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:14:57,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:14:57,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1540406454, now seen corresponding path program 1 times [2020-10-19 18:14:57,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:14:57,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059920884] [2020-10-19 18:14:57,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:14:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:57,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:14:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:57,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:14:57,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059920884] [2020-10-19 18:14:57,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:14:57,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:14:57,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47074714] [2020-10-19 18:14:57,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:14:57,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:14:57,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:14:57,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:14:57,835 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 8 states. [2020-10-19 18:14:58,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:14:58,069 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2020-10-19 18:14:58,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:14:58,070 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-19 18:14:58,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:14:58,071 INFO L225 Difference]: With dead ends: 89 [2020-10-19 18:14:58,072 INFO L226 Difference]: Without dead ends: 89 [2020-10-19 18:14:58,072 INFO L677 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 [2020-10-19 18:14:58,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-19 18:14:58,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 58. [2020-10-19 18:14:58,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-19 18:14:58,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2020-10-19 18:14:58,079 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 19 [2020-10-19 18:14:58,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:14:58,079 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2020-10-19 18:14:58,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:14:58,080 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2020-10-19 18:14:58,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 18:14:58,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:14:58,081 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:14:58,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:14:58,081 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:14:58,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:14:58,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1323044694, now seen corresponding path program 1 times [2020-10-19 18:14:58,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:14:58,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704148984] [2020-10-19 18:14:58,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:14:58,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:58,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:14:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:58,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:14:58,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704148984] [2020-10-19 18:14:58,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:14:58,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:14:58,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674788505] [2020-10-19 18:14:58,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:14:58,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:14:58,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:14:58,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:14:58,196 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 7 states. [2020-10-19 18:14:58,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:14:58,492 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2020-10-19 18:14:58,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:14:58,493 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-19 18:14:58,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:14:58,494 INFO L225 Difference]: With dead ends: 67 [2020-10-19 18:14:58,494 INFO L226 Difference]: Without dead ends: 67 [2020-10-19 18:14:58,494 INFO L677 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 [2020-10-19 18:14:58,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-19 18:14:58,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 49. [2020-10-19 18:14:58,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-19 18:14:58,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-10-19 18:14:58,500 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 19 [2020-10-19 18:14:58,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:14:58,500 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-10-19 18:14:58,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:14:58,500 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-10-19 18:14:58,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 18:14:58,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:14:58,501 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:14:58,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 18:14:58,502 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:14:58,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:14:58,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1323044695, now seen corresponding path program 1 times [2020-10-19 18:14:58,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:14:58,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016280519] [2020-10-19 18:14:58,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:14:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:58,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:14:58,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:58,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:14:58,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016280519] [2020-10-19 18:14:58,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:14:58,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:14:58,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196881753] [2020-10-19 18:14:58,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:14:58,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:14:58,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:14:58,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:14:58,588 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 7 states. [2020-10-19 18:14:58,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:14:58,809 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-10-19 18:14:58,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:14:58,809 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-19 18:14:58,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:14:58,810 INFO L225 Difference]: With dead ends: 61 [2020-10-19 18:14:58,810 INFO L226 Difference]: Without dead ends: 61 [2020-10-19 18:14:58,811 INFO L677 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 [2020-10-19 18:14:58,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-19 18:14:58,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 46. [2020-10-19 18:14:58,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-19 18:14:58,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2020-10-19 18:14:58,815 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 19 [2020-10-19 18:14:58,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:14:58,815 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2020-10-19 18:14:58,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:14:58,816 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2020-10-19 18:14:58,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 18:14:58,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:14:58,816 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:14:58,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 18:14:58,817 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:14:58,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:14:58,817 INFO L82 PathProgramCache]: Analyzing trace with hash 512039653, now seen corresponding path program 1 times [2020-10-19 18:14:58,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:14:58,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416537552] [2020-10-19 18:14:58,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:14:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:58,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:14:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:58,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:14:58,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416537552] [2020-10-19 18:14:58,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149464734] [2020-10-19 18:14:58,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:14:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:59,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-19 18:14:59,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:14:59,190 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:14:59,191 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:14:59,199 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:14:59,204 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:14:59,204 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:14:59,210 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:14:59,211 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:14:59,211 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2020-10-19 18:14:59,256 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-10-19 18:14:59,257 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:14:59,264 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:14:59,267 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-10-19 18:14:59,268 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:14:59,272 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:14:59,272 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:14:59,273 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2020-10-19 18:14:59,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:14:59,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:14:59,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 12 [2020-10-19 18:14:59,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252291509] [2020-10-19 18:14:59,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 18:14:59,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:14:59,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 18:14:59,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:14:59,280 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand 12 states. [2020-10-19 18:14:59,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:14:59,516 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2020-10-19 18:14:59,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:14:59,517 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2020-10-19 18:14:59,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:14:59,518 INFO L225 Difference]: With dead ends: 60 [2020-10-19 18:14:59,518 INFO L226 Difference]: Without dead ends: 60 [2020-10-19 18:14:59,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-10-19 18:14:59,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-19 18:14:59,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 49. [2020-10-19 18:14:59,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-19 18:14:59,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-10-19 18:14:59,524 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 20 [2020-10-19 18:14:59,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:14:59,524 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-10-19 18:14:59,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 18:14:59,524 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-10-19 18:14:59,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 18:14:59,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:14:59,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:14:59,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-10-19 18:14:59,737 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:14:59,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:14:59,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1306641237, now seen corresponding path program 1 times [2020-10-19 18:14:59,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:14:59,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327889267] [2020-10-19 18:14:59,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:14:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:14:59,755 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:14:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:14:59,766 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:14:59,791 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:14:59,791 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:14:59,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 18:14:59,807 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-10-19 18:14:59,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:14:59 BoogieIcfgContainer [2020-10-19 18:14:59,827 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:14:59,831 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:14:59,831 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:14:59,831 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:14:59,832 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:14:56" (3/4) ... [2020-10-19 18:14:59,836 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:14:59,836 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:14:59,838 INFO L168 Benchmark]: Toolchain (without parser) took 4821.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 209.7 MB). Free memory was 960.0 MB in the beginning and 1.1 GB in the end (delta: -95.5 MB). Peak memory consumption was 114.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:14:59,841 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:14:59,842 INFO L168 Benchmark]: CACSL2BoogieTranslator took 544.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -146.8 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:14:59,843 INFO L168 Benchmark]: Boogie Preprocessor took 64.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:14:59,845 INFO L168 Benchmark]: RCFGBuilder took 692.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.1 MB). Peak memory consumption was 52.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:14:59,848 INFO L168 Benchmark]: TraceAbstraction took 3499.90 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 76.0 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -6.2 MB). Peak memory consumption was 69.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:14:59,849 INFO L168 Benchmark]: Witness Printer took 5.27 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:14:59,856 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 544.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -146.8 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 64.96 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 692.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.1 MB). Peak memory consumption was 52.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3499.90 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 76.0 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -6.2 MB). Peak memory consumption was 69.9 MB. Max. memory is 11.5 GB. * Witness Printer took 5.27 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: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L533] COND FALSE !(a == 0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L534] List t; [L535] List p = a; VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] p->h = 1 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L544] p->n = 0 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L545] p = a VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L546] COND TRUE p!=0 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L547] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=1] [L547] COND FALSE !(p->h != 1) [L550] EXPR p->n VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->n={0:0}] [L550] p = p->n [L546] COND FALSE !(p!=0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={0:0}] [L552] 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. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.4s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 249 SDtfs, 481 SDslu, 385 SDs, 0 SdLazy, 941 SolverSat, 97 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 96 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 166 NumberOfCodeBlocks, 166 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 14384 SizeOfPredicates, 12 NumberOfNonLiveVariables, 129 ConjunctsInSsa, 23 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-906a4fb [2020-10-19 18:15:01,893 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-10-19 18:15:01,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:15:01,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:15:01,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:15:01,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:15:01,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:15:01,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:15:02,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:15:02,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:15:02,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:15:02,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:15:02,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:15:02,004 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-19 18:15:02,027 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:15:02,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:15:02,029 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:15:02,029 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:15:02,029 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:15:02,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:15:02,030 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:15:02,030 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:15:02,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:15:02,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:15:02,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:15:02,031 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:15:02,032 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:15:02,032 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:15:02,032 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:15:02,032 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:15:02,033 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-19 18:15:02,033 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-19 18:15:02,033 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:15:02,034 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:15:02,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:15:02,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:15:02,035 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:15:02,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:15:02,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:15:02,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:15:02,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:15:02,036 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-19 18:15:02,036 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-19 18:15:02,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:15:02,037 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-19 18:15:02,037 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 -> 621ace555bcaba2bfc5c3f9f05e7d0c3e0e54892 [2020-10-19 18:15:02,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:15:02,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:15:02,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:15:02,422 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:15:02,423 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:15:02,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/simple-2.i [2020-10-19 18:15:02,482 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f6762fc4/54a98cf498dc40fb9f9d958cf9d99ef7/FLAG146ec9b8c [2020-10-19 18:15:02,979 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:15:02,979 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/simple-2.i [2020-10-19 18:15:02,994 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f6762fc4/54a98cf498dc40fb9f9d958cf9d99ef7/FLAG146ec9b8c [2020-10-19 18:15:03,324 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f6762fc4/54a98cf498dc40fb9f9d958cf9d99ef7 [2020-10-19 18:15:03,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:15:03,335 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:15:03,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:15:03,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:15:03,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:15:03,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:15:03" (1/1) ... [2020-10-19 18:15:03,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7857f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:15:03, skipping insertion in model container [2020-10-19 18:15:03,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:15:03" (1/1) ... [2020-10-19 18:15:03,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:15:03,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:15:03,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:15:03,870 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:15:03,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:15:03,999 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:15:04,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:15:04 WrapperNode [2020-10-19 18:15:04,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:15:04,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:15:04,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:15:04,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:15:04,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:15:04" (1/1) ... [2020-10-19 18:15:04,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:15:04" (1/1) ... [2020-10-19 18:15:04,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:15:04" (1/1) ... [2020-10-19 18:15:04,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:15:04" (1/1) ... [2020-10-19 18:15:04,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:15:04" (1/1) ... [2020-10-19 18:15:04,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:15:04" (1/1) ... [2020-10-19 18:15:04,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:15:04" (1/1) ... [2020-10-19 18:15:04,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:15:04,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:15:04,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:15:04,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:15:04,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:15:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:15:04,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:15:04,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:15:04,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-19 18:15:04,154 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:15:04,154 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 18:15:04,154 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 18:15:04,154 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 18:15:04,155 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 18:15:04,155 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 18:15:04,155 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-19 18:15:04,155 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:15:04,155 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:15:04,155 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:15:04,156 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-19 18:15:04,156 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-19 18:15:04,156 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:15:04,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:15:04,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:15:04,157 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:15:04,157 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:15:04,157 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:15:04,157 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:15:04,157 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:15:04,158 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:15:04,158 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:15:04,158 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:15:04,158 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:15:04,158 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:15:04,158 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:15:04,159 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:15:04,159 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:15:04,159 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:15:04,159 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:15:04,159 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:15:04,159 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 18:15:04,159 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 18:15:04,159 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 18:15:04,159 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 18:15:04,160 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 18:15:04,161 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:15:04,161 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:15:04,161 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:15:04,161 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:15:04,161 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:15:04,162 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:15:04,162 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:15:04,163 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:15:04,163 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:15:04,163 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:15:04,163 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:15:04,163 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:15:04,164 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:15:04,164 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:15:04,164 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:15:04,164 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:15:04,165 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:15:04,165 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:15:04,165 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:15:04,165 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:15:04,165 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:15:04,166 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:15:04,166 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:15:04,166 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:15:04,167 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:15:04,167 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:15:04,167 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:15:04,168 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:15:04,168 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:15:04,168 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:15:04,169 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:15:04,169 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:15:04,170 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:15:04,171 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:15:04,171 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:15:04,171 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:15:04,171 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:15:04,172 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:15:04,172 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:15:04,172 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:15:04,172 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:15:04,172 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:15:04,173 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:15:04,173 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:15:04,173 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:15:04,173 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:15:04,173 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:15:04,174 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:15:04,174 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:15:04,174 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:15:04,174 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:15:04,174 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:15:04,175 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:15:04,175 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:15:04,175 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:15:04,175 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:15:04,175 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:15:04,176 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:15:04,176 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:15:04,176 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:15:04,176 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:15:04,176 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:15:04,176 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:15:04,177 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:15:04,177 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:15:04,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:15:04,177 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:15:04,177 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:15:04,178 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:15:04,178 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:15:04,178 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:15:04,179 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:15:04,179 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:15:04,179 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:15:04,179 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:15:04,179 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:15:04,180 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:15:04,180 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:15:04,181 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:15:04,181 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:15:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:15:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:15:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:15:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:15:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:15:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-19 18:15:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:15:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:15:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-19 18:15:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:15:04,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:15:04,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-19 18:15:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:15:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-19 18:15:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:15:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-19 18:15:04,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-19 18:15:04,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-19 18:15:04,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:15:04,609 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-19 18:15:04,855 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:15:04,856 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-19 18:15:04,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:15:04 BoogieIcfgContainer [2020-10-19 18:15:04,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:15:04,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:15:04,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:15:04,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:15:04,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:15:03" (1/3) ... [2020-10-19 18:15:04,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a09d75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:15:04, skipping insertion in model container [2020-10-19 18:15:04,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:15:04" (2/3) ... [2020-10-19 18:15:04,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a09d75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:15:04, skipping insertion in model container [2020-10-19 18:15:04,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:15:04" (3/3) ... [2020-10-19 18:15:04,868 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-2.i [2020-10-19 18:15:04,881 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:15:04,889 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-10-19 18:15:04,904 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-10-19 18:15:04,927 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:15:04,927 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:15:04,927 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:15:04,928 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:15:04,928 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:15:04,928 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:15:04,929 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:15:04,929 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:15:04,946 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-19 18:15:04,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 18:15:04,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:15:04,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:15:04,959 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:15:04,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:15:04,966 INFO L82 PathProgramCache]: Analyzing trace with hash 157453930, now seen corresponding path program 1 times [2020-10-19 18:15:04,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:15:04,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460374339] [2020-10-19 18:15:04,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-19 18:15:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:15:05,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-19 18:15:05,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:15:05,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:15:05,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:15:05,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:15:05,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460374339] [2020-10-19 18:15:05,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:15:05,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-19 18:15:05,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262539831] [2020-10-19 18:15:05,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-19 18:15:05,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:15:05,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-19 18:15:05,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-19 18:15:05,205 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2020-10-19 18:15:05,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:15:05,229 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2020-10-19 18:15:05,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 18:15:05,231 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-19 18:15:05,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:15:05,241 INFO L225 Difference]: With dead ends: 51 [2020-10-19 18:15:05,241 INFO L226 Difference]: Without dead ends: 44 [2020-10-19 18:15:05,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-19 18:15:05,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-19 18:15:05,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-19 18:15:05,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-19 18:15:05,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-10-19 18:15:05,289 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 10 [2020-10-19 18:15:05,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:15:05,290 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-10-19 18:15:05,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-19 18:15:05,290 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-10-19 18:15:05,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 18:15:05,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:15:05,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:15:05,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-19 18:15:05,515 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:15:05,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:15:05,515 INFO L82 PathProgramCache]: Analyzing trace with hash 157453248, now seen corresponding path program 1 times [2020-10-19 18:15:05,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:15:05,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071760396] [2020-10-19 18:15:05,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-19 18:15:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:15:05,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:15:05,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:15:05,714 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:15:05,715 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:05,719 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:05,719 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:15:05,720 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:15:05,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:15:05,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:15:05,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:15:05,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071760396] [2020-10-19 18:15:05,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:15:05,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-19 18:15:05,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979058798] [2020-10-19 18:15:05,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:15:05,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:15:05,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:15:05,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:15:05,758 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 4 states. [2020-10-19 18:15:05,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:15:05,964 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2020-10-19 18:15:05,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:15:05,965 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-19 18:15:05,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:15:05,967 INFO L225 Difference]: With dead ends: 51 [2020-10-19 18:15:05,967 INFO L226 Difference]: Without dead ends: 51 [2020-10-19 18:15:05,968 INFO L677 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 [2020-10-19 18:15:05,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-19 18:15:05,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2020-10-19 18:15:05,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-19 18:15:05,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-10-19 18:15:05,976 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 10 [2020-10-19 18:15:05,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:15:05,977 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-10-19 18:15:05,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:15:05,977 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-10-19 18:15:05,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 18:15:05,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:15:05,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:15:06,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-19 18:15:06,192 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:15:06,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:15:06,194 INFO L82 PathProgramCache]: Analyzing trace with hash 157453249, now seen corresponding path program 1 times [2020-10-19 18:15:06,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:15:06,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534081677] [2020-10-19 18:15:06,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-19 18:15:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:15:06,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:15:06,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:15:06,346 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:15:06,347 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:06,355 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:06,355 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:15:06,356 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:15:06,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:15:06,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:15:06,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:15:06,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534081677] [2020-10-19 18:15:06,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:15:06,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-19 18:15:06,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232505891] [2020-10-19 18:15:06,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:15:06,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:15:06,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:15:06,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:15:06,506 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 6 states. [2020-10-19 18:15:06,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:15:06,882 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2020-10-19 18:15:06,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:15:06,884 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-19 18:15:06,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:15:06,887 INFO L225 Difference]: With dead ends: 59 [2020-10-19 18:15:06,887 INFO L226 Difference]: Without dead ends: 59 [2020-10-19 18:15:06,888 INFO L677 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 [2020-10-19 18:15:06,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-19 18:15:06,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2020-10-19 18:15:06,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-19 18:15:06,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-19 18:15:06,895 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 10 [2020-10-19 18:15:06,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:15:06,896 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-19 18:15:06,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:15:06,896 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-19 18:15:06,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 18:15:06,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:15:06,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:15:07,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-19 18:15:07,112 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:15:07,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:15:07,112 INFO L82 PathProgramCache]: Analyzing trace with hash 5227808, now seen corresponding path program 1 times [2020-10-19 18:15:07,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:15:07,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611520165] [2020-10-19 18:15:07,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-19 18:15:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:15:07,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:15:07,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:15:07,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:15:07,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:15:07,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:15:07,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611520165] [2020-10-19 18:15:07,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:15:07,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-19 18:15:07,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113326598] [2020-10-19 18:15:07,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:15:07,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:15:07,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:15:07,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:15:07,275 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 4 states. [2020-10-19 18:15:07,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:15:07,433 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2020-10-19 18:15:07,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:15:07,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-19 18:15:07,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:15:07,435 INFO L225 Difference]: With dead ends: 56 [2020-10-19 18:15:07,435 INFO L226 Difference]: Without dead ends: 56 [2020-10-19 18:15:07,436 INFO L677 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 [2020-10-19 18:15:07,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-19 18:15:07,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2020-10-19 18:15:07,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-19 18:15:07,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-10-19 18:15:07,442 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 15 [2020-10-19 18:15:07,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:15:07,442 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-10-19 18:15:07,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:15:07,443 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-10-19 18:15:07,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 18:15:07,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:15:07,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:15:07,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-19 18:15:07,656 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:15:07,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:15:07,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1162167200, now seen corresponding path program 1 times [2020-10-19 18:15:07,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:15:07,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948092230] [2020-10-19 18:15:07,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-19 18:15:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:15:07,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 18:15:07,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:15:07,806 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:15:07,807 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:07,816 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:07,816 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:15:07,816 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-10-19 18:15:07,858 INFO L350 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-10-19 18:15:07,859 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2020-10-19 18:15:07,860 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:07,863 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:07,863 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:15:07,864 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:9 [2020-10-19 18:15:07,901 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-10-19 18:15:07,902 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:07,905 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:07,905 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:15:07,905 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:3 [2020-10-19 18:15:07,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:15:07,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:15:07,941 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:15:07,980 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:07,981 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:15:07,981 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:17 [2020-10-19 18:15:08,044 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2020-10-19 18:15:08,053 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:08,112 INFO L625 ElimStorePlain]: treesize reduction 34, result has 39.3 percent of original size [2020-10-19 18:15:08,120 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-10-19 18:15:08,120 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2020-10-19 18:15:08,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:15:08,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [948092230] [2020-10-19 18:15:08,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:15:08,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2020-10-19 18:15:08,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784407467] [2020-10-19 18:15:08,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:15:08,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:15:08,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:15:08,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:15:08,129 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 8 states. [2020-10-19 18:15:08,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:15:08,560 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2020-10-19 18:15:08,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:15:08,562 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-10-19 18:15:08,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:15:08,564 INFO L225 Difference]: With dead ends: 86 [2020-10-19 18:15:08,564 INFO L226 Difference]: Without dead ends: 86 [2020-10-19 18:15:08,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:15:08,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-19 18:15:08,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 56. [2020-10-19 18:15:08,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-19 18:15:08,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2020-10-19 18:15:08,585 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 18 [2020-10-19 18:15:08,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:15:08,587 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2020-10-19 18:15:08,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:15:08,588 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2020-10-19 18:15:08,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 18:15:08,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:15:08,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:15:08,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-19 18:15:08,791 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:15:08,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:15:08,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1469140663, now seen corresponding path program 1 times [2020-10-19 18:15:08,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:15:08,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576494912] [2020-10-19 18:15:08,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-19 18:15:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:15:08,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 18:15:08,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:15:08,922 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:15:08,922 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:08,924 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:08,925 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:15:08,925 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:15:08,952 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-19 18:15:08,953 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:08,962 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:08,964 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:15:08,964 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-10-19 18:15:08,982 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2020-10-19 18:15:08,983 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:08,985 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:08,985 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:15:08,986 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-10-19 18:15:09,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:15:09,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:15:09,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:15:09,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576494912] [2020-10-19 18:15:09,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:15:09,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-19 18:15:09,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302491384] [2020-10-19 18:15:09,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:15:09,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:15:09,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:15:09,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:15:09,027 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 6 states. [2020-10-19 18:15:09,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:15:09,397 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2020-10-19 18:15:09,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:15:09,399 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-19 18:15:09,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:15:09,400 INFO L225 Difference]: With dead ends: 67 [2020-10-19 18:15:09,400 INFO L226 Difference]: Without dead ends: 67 [2020-10-19 18:15:09,401 INFO L677 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 [2020-10-19 18:15:09,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-19 18:15:09,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 54. [2020-10-19 18:15:09,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-19 18:15:09,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-10-19 18:15:09,408 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 17 [2020-10-19 18:15:09,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:15:09,408 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-10-19 18:15:09,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:15:09,409 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-10-19 18:15:09,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 18:15:09,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:15:09,410 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:15:09,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-19 18:15:09,612 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:15:09,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:15:09,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1469140664, now seen corresponding path program 1 times [2020-10-19 18:15:09,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:15:09,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506249348] [2020-10-19 18:15:09,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-19 18:15:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:15:09,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 18:15:09,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:15:09,733 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:15:09,733 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:09,738 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:09,738 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:15:09,738 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:15:09,763 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-19 18:15:09,764 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:09,784 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:09,790 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-19 18:15:09,790 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:09,801 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:09,803 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:15:09,803 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2020-10-19 18:15:09,834 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-10-19 18:15:09,835 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:09,847 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:09,850 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2020-10-19 18:15:09,851 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:09,856 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:09,856 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:15:09,857 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-10-19 18:15:09,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:15:09,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:15:10,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:15:10,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506249348] [2020-10-19 18:15:10,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:15:10,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-10-19 18:15:10,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336895680] [2020-10-19 18:15:10,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 18:15:10,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:15:10,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 18:15:10,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:15:10,100 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 10 states. [2020-10-19 18:15:11,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:15:11,090 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2020-10-19 18:15:11,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:15:11,091 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-19 18:15:11,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:15:11,093 INFO L225 Difference]: With dead ends: 63 [2020-10-19 18:15:11,093 INFO L226 Difference]: Without dead ends: 63 [2020-10-19 18:15:11,094 INFO L677 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 [2020-10-19 18:15:11,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-19 18:15:11,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 44. [2020-10-19 18:15:11,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-19 18:15:11,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-10-19 18:15:11,098 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 17 [2020-10-19 18:15:11,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:15:11,098 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-10-19 18:15:11,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 18:15:11,099 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-10-19 18:15:11,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 18:15:11,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:15:11,099 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:15:11,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-19 18:15:11,311 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:15:11,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:15:11,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1671545519, now seen corresponding path program 1 times [2020-10-19 18:15:11,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:15:11,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82451908] [2020-10-19 18:15:11,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-19 18:15:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:15:11,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 18:15:11,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:15:11,449 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-19 18:15:11,450 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:11,462 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:11,468 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-19 18:15:11,469 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:11,482 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:11,482 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:15:11,483 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:19 [2020-10-19 18:15:11,544 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-10-19 18:15:11,545 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:11,557 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:11,562 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-10-19 18:15:11,563 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:11,568 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:11,568 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:15:11,568 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:7 [2020-10-19 18:15:11,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:15:11,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:15:11,622 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2020-10-19 18:15:11,624 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-19 18:15:11,655 INFO L625 ElimStorePlain]: treesize reduction 19, result has 36.7 percent of original size [2020-10-19 18:15:11,655 INFO L513 ElimStorePlain]: Eliminatee |#memory_$Pointer$.base| vanished before elimination [2020-10-19 18:15:11,655 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-10-19 18:15:11,656 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:11 [2020-10-19 18:15:11,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:15:11,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82451908] [2020-10-19 18:15:11,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:15:11,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-19 18:15:11,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65576303] [2020-10-19 18:15:11,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:15:11,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:15:11,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:15:11,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:15:11,663 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 7 states. [2020-10-19 18:15:16,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:15:16,107 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2020-10-19 18:15:16,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:15:16,108 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-19 18:15:16,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:15:16,109 INFO L225 Difference]: With dead ends: 55 [2020-10-19 18:15:16,109 INFO L226 Difference]: Without dead ends: 55 [2020-10-19 18:15:16,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:15:16,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-19 18:15:16,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 47. [2020-10-19 18:15:16,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-19 18:15:16,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2020-10-19 18:15:16,120 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 19 [2020-10-19 18:15:16,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:15:16,122 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2020-10-19 18:15:16,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:15:16,122 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2020-10-19 18:15:16,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 18:15:16,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:15:16,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:15:16,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-19 18:15:16,325 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:15:16,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:15:16,326 INFO L82 PathProgramCache]: Analyzing trace with hash 278302293, now seen corresponding path program 1 times [2020-10-19 18:15:16,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:15:16,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549293492] [2020-10-19 18:15:16,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-10-19 18:15:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:15:16,446 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:15:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:15:16,480 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:15:16,512 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-19 18:15:16,512 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:15:16,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-10-19 18:15:16,726 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-10-19 18:15:16,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:15:16 BoogieIcfgContainer [2020-10-19 18:15:16,742 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:15:16,742 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:15:16,742 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:15:16,742 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:15:16,743 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:15:04" (3/4) ... [2020-10-19 18:15:16,746 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:15:16,746 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:15:16,748 INFO L168 Benchmark]: Toolchain (without parser) took 13417.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 206.0 MB). Free memory was 954.6 MB in the beginning and 879.5 MB in the end (delta: 75.1 MB). Peak memory consumption was 281.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:15:16,748 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:15:16,749 INFO L168 Benchmark]: CACSL2BoogieTranslator took 663.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -136.2 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:15:16,749 INFO L168 Benchmark]: Boogie Preprocessor took 76.15 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:15:16,750 INFO L168 Benchmark]: RCFGBuilder took 780.66 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: 58.7 MB). Peak memory consumption was 58.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:15:16,750 INFO L168 Benchmark]: TraceAbstraction took 11882.17 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 87.6 MB). Free memory was 1.0 GB in the beginning and 879.5 MB in the end (delta: 147.3 MB). Peak memory consumption was 234.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:15:16,751 INFO L168 Benchmark]: Witness Printer took 3.76 ms. Allocated memory is still 1.2 GB. Free memory is still 879.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:15:16,753 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 663.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -136.2 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 76.15 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 780.66 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: 58.7 MB). Peak memory consumption was 58.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 11882.17 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 87.6 MB). Free memory was 1.0 GB in the beginning and 879.5 MB in the end (delta: 147.3 MB). Peak memory consumption was 234.8 MB. Max. memory is 11.5 GB. * Witness Printer took 3.76 ms. Allocated memory is still 1.2 GB. Free memory is still 879.5 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: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); VAL [a={1:0}, malloc(sizeof(struct node))={1:0}] [L533] COND FALSE !(a == 0) VAL [a={1:0}, malloc(sizeof(struct node))={1:0}] [L534] List t; [L535] List p = a; VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] p->h = 1 VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L544] p->n = 0 VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L545] p = a VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L546] COND TRUE p!=0 VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L547] EXPR p->h VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=1] [L547] COND FALSE !(p->h != 1) [L550] EXPR p->n VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}, p->n={0:0}] [L550] p = p->n [L546] COND FALSE !(p!=0) VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={0:0}] [L552] return 0; VAL [\result=0, a={1:0}, malloc(sizeof(struct node))={1:0}, p={0:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 76 locations, 16 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.7s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 252 SDtfs, 387 SDslu, 463 SDs, 0 SdLazy, 622 SolverSat, 86 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 6.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 244 GetRequests, 194 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s 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, 87 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 216 ConstructedInterpolants, 1 QuantifiedInterpolants, 14850 SizeOfPredicates, 49 NumberOfNonLiveVariables, 646 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 16 InterpolantComputations, 14 PerfectInterpolantSequences, 6/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...