./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 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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 -Xmx15G -Xms4m -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 0.1.25-9a8b2e8 [2020-10-20 06:07:47,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:07:47,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:07:47,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:07:47,654 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:07:47,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:07:47,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:07:47,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:07:47,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:07:47,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:07:47,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:07:47,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:07:47,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:07:47,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:07:47,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:07:47,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:07:47,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:07:47,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:07:47,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:07:47,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:07:47,705 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:07:47,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:07:47,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:07:47,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:07:47,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:07:47,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:07:47,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:07:47,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:07:47,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:07:47,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:07:47,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:07:47,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:07:47,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:07:47,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:07:47,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:07:47,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:07:47,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:07:47,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:07:47,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:07:47,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:07:47,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:07:47,724 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 06:07:47,748 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:07:47,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:07:47,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:07:47,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:07:47,751 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:07:47,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:07:47,752 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:07:47,752 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:07:47,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:07:47,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:07:47,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:07:47,753 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:07:47,753 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:07:47,754 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 06:07:47,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:07:47,754 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:07:47,754 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:07:47,755 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:07:47,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:07:47,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:07:47,756 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:07:47,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:07:47,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:07:47,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:07:47,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:07:47,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:07:47,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:07:47,757 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:07:47,758 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 [2020-10-20 06:07:47,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:07:48,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:07:48,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:07:48,009 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:07:48,009 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:07:48,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/simple-2.i [2020-10-20 06:07:48,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/949d97ac1/2c5bc10c85a542c2b311f0f5448d5bf5/FLAG91167332b [2020-10-20 06:07:48,699 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:07:48,700 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/simple-2.i [2020-10-20 06:07:48,716 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/949d97ac1/2c5bc10c85a542c2b311f0f5448d5bf5/FLAG91167332b [2020-10-20 06:07:49,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/949d97ac1/2c5bc10c85a542c2b311f0f5448d5bf5 [2020-10-20 06:07:49,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:07:49,019 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:07:49,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:07:49,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:07:49,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:07:49,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:07:49" (1/1) ... [2020-10-20 06:07:49,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@201fd303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:49, skipping insertion in model container [2020-10-20 06:07:49,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:07:49" (1/1) ... [2020-10-20 06:07:49,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:07:49,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:07:49,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:07:49,490 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:07:49,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:07:49,641 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:07:49,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:49 WrapperNode [2020-10-20 06:07:49,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:07:49,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:07:49,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:07:49,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:07:49,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:49" (1/1) ... [2020-10-20 06:07:49,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:49" (1/1) ... [2020-10-20 06:07:49,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:49" (1/1) ... [2020-10-20 06:07:49,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:49" (1/1) ... [2020-10-20 06:07:49,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:49" (1/1) ... [2020-10-20 06:07:49,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:49" (1/1) ... [2020-10-20 06:07:49,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:49" (1/1) ... [2020-10-20 06:07:49,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:07:49,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:07:49,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:07:49,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:07:49,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:49" (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 [2020-10-20 06:07:49,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:07:49,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:07:49,812 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 06:07:49,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 06:07:49,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 06:07:49,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-20 06:07:49,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-20 06:07:49,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-20 06:07:49,814 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-20 06:07:49,814 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:07:49,814 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 06:07:49,815 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 06:07:49,815 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-20 06:07:49,815 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-20 06:07:49,816 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 06:07:49,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:07:49,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 06:07:49,817 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 06:07:49,817 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 06:07:49,817 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 06:07:49,817 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 06:07:49,818 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 06:07:49,818 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 06:07:49,818 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 06:07:49,818 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 06:07:49,819 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 06:07:49,819 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 06:07:49,819 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 06:07:49,819 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 06:07:49,820 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 06:07:49,820 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 06:07:49,820 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 06:07:49,821 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 06:07:49,821 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 06:07:49,821 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 06:07:49,821 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-20 06:07:49,821 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-20 06:07:49,822 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-20 06:07:49,822 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 06:07:49,822 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 06:07:49,822 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 06:07:49,822 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 06:07:49,823 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 06:07:49,823 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 06:07:49,823 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 06:07:49,823 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 06:07:49,824 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 06:07:49,824 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 06:07:49,824 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 06:07:49,824 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 06:07:49,824 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 06:07:49,825 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 06:07:49,825 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 06:07:49,825 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 06:07:49,825 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 06:07:49,826 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 06:07:49,826 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 06:07:49,826 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 06:07:49,826 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 06:07:49,827 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 06:07:49,827 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 06:07:49,827 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 06:07:49,827 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 06:07:49,827 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 06:07:49,828 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 06:07:49,828 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 06:07:49,828 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 06:07:49,835 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 06:07:49,836 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 06:07:49,836 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 06:07:49,836 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 06:07:49,836 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 06:07:49,837 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 06:07:49,837 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 06:07:49,837 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 06:07:49,837 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 06:07:49,837 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 06:07:49,838 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 06:07:49,838 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 06:07:49,838 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 06:07:49,838 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 06:07:49,839 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 06:07:49,839 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 06:07:49,839 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 06:07:49,839 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 06:07:49,840 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 06:07:49,840 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 06:07:49,840 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 06:07:49,840 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 06:07:49,840 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 06:07:49,841 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 06:07:49,841 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 06:07:49,841 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 06:07:49,841 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 06:07:49,842 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 06:07:49,842 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 06:07:49,842 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 06:07:49,842 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 06:07:49,842 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 06:07:49,843 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 06:07:49,843 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 06:07:49,843 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 06:07:49,843 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 06:07:49,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 06:07:49,844 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 06:07:49,844 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 06:07:49,844 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 06:07:49,844 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 06:07:49,845 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 06:07:49,845 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 06:07:49,845 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 06:07:49,845 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 06:07:49,845 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 06:07:49,846 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 06:07:49,846 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 06:07:49,846 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 06:07:49,846 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 06:07:49,847 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 06:07:49,847 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 06:07:49,847 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 06:07:49,847 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 06:07:49,847 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 06:07:49,848 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 06:07:49,848 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-20 06:07:49,848 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:07:49,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 06:07:49,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:07:49,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 06:07:49,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 06:07:49,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:07:49,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:07:49,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 06:07:49,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:07:49,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:07:50,331 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-20 06:07:50,533 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:07:50,534 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-20 06:07:50,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:07:50 BoogieIcfgContainer [2020-10-20 06:07:50,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:07:50,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:07:50,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:07:50,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:07:50,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:07:49" (1/3) ... [2020-10-20 06:07:50,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b48de8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:07:50, skipping insertion in model container [2020-10-20 06:07:50,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:49" (2/3) ... [2020-10-20 06:07:50,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b48de8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:07:50, skipping insertion in model container [2020-10-20 06:07:50,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:07:50" (3/3) ... [2020-10-20 06:07:50,548 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-2.i [2020-10-20 06:07:50,558 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:07:50,567 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-10-20 06:07:50,578 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-10-20 06:07:50,599 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:07:50,600 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:07:50,600 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:07:50,600 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:07:50,600 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:07:50,600 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:07:50,600 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:07:50,601 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:07:50,620 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-10-20 06:07:50,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 06:07:50,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:50,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:50,633 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]=== [2020-10-20 06:07:50,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:50,640 INFO L82 PathProgramCache]: Analyzing trace with hash -668473910, now seen corresponding path program 1 times [2020-10-20 06:07:50,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:50,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856089085] [2020-10-20 06:07:50,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:50,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:07:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:50,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:50,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856089085] [2020-10-20 06:07:50,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:50,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:07:50,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009768279] [2020-10-20 06:07:50,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:07:50,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:07:50,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:07:50,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:07:50,937 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 3 states. [2020-10-20 06:07:51,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:51,114 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2020-10-20 06:07:51,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:07:51,117 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-20 06:07:51,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:51,125 INFO L225 Difference]: With dead ends: 52 [2020-10-20 06:07:51,126 INFO L226 Difference]: Without dead ends: 45 [2020-10-20 06:07:51,127 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 [2020-10-20 06:07:51,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-20 06:07:51,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-20 06:07:51,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-20 06:07:51,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-10-20 06:07:51,167 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 10 [2020-10-20 06:07:51,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:51,168 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-10-20 06:07:51,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:07:51,168 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-10-20 06:07:51,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 06:07:51,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:51,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:51,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:07:51,169 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]=== [2020-10-20 06:07:51,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:51,170 INFO L82 PathProgramCache]: Analyzing trace with hash 752120503, now seen corresponding path program 1 times [2020-10-20 06:07:51,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:51,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481066798] [2020-10-20 06:07:51,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:51,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:07:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:51,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:51,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481066798] [2020-10-20 06:07:51,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:51,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:07:51,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211406060] [2020-10-20 06:07:51,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:07:51,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:07:51,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:07:51,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:07:51,310 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 5 states. [2020-10-20 06:07:51,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:51,574 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2020-10-20 06:07:51,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:07:51,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-20 06:07:51,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:51,579 INFO L225 Difference]: With dead ends: 72 [2020-10-20 06:07:51,579 INFO L226 Difference]: Without dead ends: 72 [2020-10-20 06:07:51,580 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 [2020-10-20 06:07:51,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-20 06:07:51,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 58. [2020-10-20 06:07:51,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-20 06:07:51,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2020-10-20 06:07:51,590 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 11 [2020-10-20 06:07:51,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:51,591 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2020-10-20 06:07:51,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:07:51,591 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-10-20 06:07:51,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 06:07:51,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:51,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:51,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:07:51,593 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]=== [2020-10-20 06:07:51,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:51,593 INFO L82 PathProgramCache]: Analyzing trace with hash 752120502, now seen corresponding path program 1 times [2020-10-20 06:07:51,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:51,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64004764] [2020-10-20 06:07:51,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:51,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:07:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:51,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:51,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64004764] [2020-10-20 06:07:51,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:51,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:07:51,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895473164] [2020-10-20 06:07:51,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:07:51,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:07:51,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:07:51,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:07:51,675 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 5 states. [2020-10-20 06:07:51,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:51,827 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2020-10-20 06:07:51,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:07:51,827 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-20 06:07:51,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:51,828 INFO L225 Difference]: With dead ends: 57 [2020-10-20 06:07:51,829 INFO L226 Difference]: Without dead ends: 57 [2020-10-20 06:07:51,829 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 [2020-10-20 06:07:51,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-20 06:07:51,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-10-20 06:07:51,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-20 06:07:51,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-10-20 06:07:51,836 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 11 [2020-10-20 06:07:51,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:51,836 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-10-20 06:07:51,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:07:51,836 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-10-20 06:07:51,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 06:07:51,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:51,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:51,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:07:51,838 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]=== [2020-10-20 06:07:51,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:51,838 INFO L82 PathProgramCache]: Analyzing trace with hash 2025061653, now seen corresponding path program 1 times [2020-10-20 06:07:51,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:51,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886566863] [2020-10-20 06:07:51,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:51,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:07:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:51,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:51,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886566863] [2020-10-20 06:07:51,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:51,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:07:51,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638645454] [2020-10-20 06:07:51,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:07:51,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:07:51,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:07:51,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:07:51,949 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 5 states. [2020-10-20 06:07:52,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:52,108 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2020-10-20 06:07:52,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:07:52,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-20 06:07:52,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:52,110 INFO L225 Difference]: With dead ends: 58 [2020-10-20 06:07:52,110 INFO L226 Difference]: Without dead ends: 58 [2020-10-20 06:07:52,110 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 [2020-10-20 06:07:52,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-20 06:07:52,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-10-20 06:07:52,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-20 06:07:52,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-10-20 06:07:52,116 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 16 [2020-10-20 06:07:52,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:52,117 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-10-20 06:07:52,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:07:52,117 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-10-20 06:07:52,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 06:07:52,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:52,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:52,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 06:07:52,118 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]=== [2020-10-20 06:07:52,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:52,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1540406454, now seen corresponding path program 1 times [2020-10-20 06:07:52,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:52,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233309136] [2020-10-20 06:07:52,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:52,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:07:52,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:52,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:52,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233309136] [2020-10-20 06:07:52,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:52,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-20 06:07:52,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710411410] [2020-10-20 06:07:52,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:07:52,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:07:52,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:07:52,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:07:52,239 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 8 states. [2020-10-20 06:07:52,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:52,465 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2020-10-20 06:07:52,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:07:52,466 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-20 06:07:52,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:52,467 INFO L225 Difference]: With dead ends: 89 [2020-10-20 06:07:52,467 INFO L226 Difference]: Without dead ends: 89 [2020-10-20 06:07:52,468 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 [2020-10-20 06:07:52,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-20 06:07:52,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 58. [2020-10-20 06:07:52,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-20 06:07:52,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2020-10-20 06:07:52,475 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 19 [2020-10-20 06:07:52,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:52,476 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2020-10-20 06:07:52,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:07:52,477 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2020-10-20 06:07:52,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 06:07:52,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:52,478 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:52,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 06:07:52,479 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]=== [2020-10-20 06:07:52,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:52,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1323044694, now seen corresponding path program 1 times [2020-10-20 06:07:52,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:52,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734061800] [2020-10-20 06:07:52,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:52,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:07:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:52,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:52,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734061800] [2020-10-20 06:07:52,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:52,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 06:07:52,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525987920] [2020-10-20 06:07:52,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:07:52,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:07:52,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:07:52,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:07:52,610 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 7 states. [2020-10-20 06:07:52,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:52,904 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2020-10-20 06:07:52,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:07:52,905 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-20 06:07:52,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:52,906 INFO L225 Difference]: With dead ends: 67 [2020-10-20 06:07:52,906 INFO L226 Difference]: Without dead ends: 67 [2020-10-20 06:07:52,907 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 [2020-10-20 06:07:52,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-20 06:07:52,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 49. [2020-10-20 06:07:52,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-20 06:07:52,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-10-20 06:07:52,912 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 19 [2020-10-20 06:07:52,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:52,913 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-10-20 06:07:52,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:07:52,913 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-10-20 06:07:52,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 06:07:52,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:52,914 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:52,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 06:07:52,915 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]=== [2020-10-20 06:07:52,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:52,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1323044695, now seen corresponding path program 1 times [2020-10-20 06:07:52,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:52,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413740499] [2020-10-20 06:07:52,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:53,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:07:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:53,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:53,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413740499] [2020-10-20 06:07:53,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:53,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 06:07:53,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559579512] [2020-10-20 06:07:53,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:07:53,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:07:53,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:07:53,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:07:53,032 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 7 states. [2020-10-20 06:07:53,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:53,251 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-10-20 06:07:53,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:07:53,252 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-20 06:07:53,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:53,254 INFO L225 Difference]: With dead ends: 61 [2020-10-20 06:07:53,254 INFO L226 Difference]: Without dead ends: 61 [2020-10-20 06:07:53,254 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 [2020-10-20 06:07:53,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-20 06:07:53,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 46. [2020-10-20 06:07:53,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-20 06:07:53,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2020-10-20 06:07:53,260 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 19 [2020-10-20 06:07:53,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:53,260 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2020-10-20 06:07:53,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:07:53,261 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2020-10-20 06:07:53,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 06:07:53,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:53,262 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:53,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 06:07:53,263 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]=== [2020-10-20 06:07:53,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:53,263 INFO L82 PathProgramCache]: Analyzing trace with hash 512039653, now seen corresponding path program 1 times [2020-10-20 06:07:53,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:53,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090294970] [2020-10-20 06:07:53,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:53,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:07:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:53,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:53,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090294970] [2020-10-20 06:07:53,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880981994] [2020-10-20 06:07:53,430 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 [2020-10-20 06:07:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:53,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-20 06:07:53,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:07:53,802 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 [2020-10-20 06:07:53,806 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:07:53,814 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:07:53,819 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 [2020-10-20 06:07:53,820 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:07:53,826 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:07:53,827 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:07:53,828 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2020-10-20 06:07:53,895 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 [2020-10-20 06:07:53,896 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:07:53,908 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:07:53,912 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 [2020-10-20 06:07:53,913 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:07:53,917 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:07:53,918 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:07:53,918 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2020-10-20 06:07:53,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:53,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:07:53,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 12 [2020-10-20 06:07:53,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614488899] [2020-10-20 06:07:53,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 06:07:53,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:07:53,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 06:07:53,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:07:53,926 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand 12 states. [2020-10-20 06:07:54,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:54,195 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2020-10-20 06:07:54,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:07:54,196 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2020-10-20 06:07:54,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:54,198 INFO L225 Difference]: With dead ends: 60 [2020-10-20 06:07:54,198 INFO L226 Difference]: Without dead ends: 60 [2020-10-20 06:07:54,198 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 [2020-10-20 06:07:54,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-20 06:07:54,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 49. [2020-10-20 06:07:54,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-20 06:07:54,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-10-20 06:07:54,204 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 20 [2020-10-20 06:07:54,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:54,205 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-10-20 06:07:54,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 06:07:54,206 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-10-20 06:07:54,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 06:07:54,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:54,207 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] [2020-10-20 06:07:54,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-10-20 06:07:54,421 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]=== [2020-10-20 06:07:54,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:54,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1306641237, now seen corresponding path program 1 times [2020-10-20 06:07:54,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:54,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108686349] [2020-10-20 06:07:54,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:07:54,441 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:07:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:07:54,468 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:07:54,508 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:07:54,509 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:07:54,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 06:07:54,526 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-10-20 06:07:54,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:07:54 BoogieIcfgContainer [2020-10-20 06:07:54,545 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:07:54,545 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:07:54,546 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:07:54,546 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:07:54,547 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:07:50" (3/4) ... [2020-10-20 06:07:54,551 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:07:54,552 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:07:54,554 INFO L168 Benchmark]: Toolchain (without parser) took 5539.91 ms. Allocated memory was 33.6 MB in the beginning and 71.3 MB in the end (delta: 37.7 MB). Free memory was 8.2 MB in the beginning and 18.5 MB in the end (delta: -10.3 MB). Peak memory consumption was 27.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:07:54,555 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 33.0 MB. Free memory was 17.4 MB in the beginning and 17.4 MB in the end (delta: 52.2 kB). Peak memory consumption was 52.2 kB. Max. memory is 14.3 GB. [2020-10-20 06:07:54,556 INFO L168 Benchmark]: CACSL2BoogieTranslator took 622.95 ms. Allocated memory was 33.6 MB in the beginning and 43.5 MB in the end (delta: 10.0 MB). Free memory was 7.4 MB in the beginning and 23.0 MB in the end (delta: -15.6 MB). Peak memory consumption was 7.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:07:54,557 INFO L168 Benchmark]: Boogie Preprocessor took 79.49 ms. Allocated memory is still 43.5 MB. Free memory was 23.0 MB in the beginning and 20.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:07:54,558 INFO L168 Benchmark]: RCFGBuilder took 806.74 ms. Allocated memory was 43.5 MB in the beginning and 46.7 MB in the end (delta: 3.1 MB). Free memory was 20.1 MB in the beginning and 18.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 11.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:07:54,559 INFO L168 Benchmark]: TraceAbstraction took 4006.92 ms. Allocated memory was 46.7 MB in the beginning and 71.3 MB in the end (delta: 24.6 MB). Free memory was 17.9 MB in the beginning and 19.3 MB in the end (delta: -1.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:07:54,559 INFO L168 Benchmark]: Witness Printer took 6.37 ms. Allocated memory is still 71.3 MB. Free memory was 19.3 MB in the beginning and 18.5 MB in the end (delta: 799.6 kB). Peak memory consumption was 799.6 kB. Max. memory is 14.3 GB. [2020-10-20 06:07:54,564 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 33.0 MB. Free memory was 17.4 MB in the beginning and 17.4 MB in the end (delta: 52.2 kB). Peak memory consumption was 52.2 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 622.95 ms. Allocated memory was 33.6 MB in the beginning and 43.5 MB in the end (delta: 10.0 MB). Free memory was 7.4 MB in the beginning and 23.0 MB in the end (delta: -15.6 MB). Peak memory consumption was 7.4 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 79.49 ms. Allocated memory is still 43.5 MB. Free memory was 23.0 MB in the beginning and 20.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. * RCFGBuilder took 806.74 ms. Allocated memory was 43.5 MB in the beginning and 46.7 MB in the end (delta: 3.1 MB). Free memory was 20.1 MB in the beginning and 18.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 11.0 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4006.92 ms. Allocated memory was 46.7 MB in the beginning and 71.3 MB in the end (delta: 24.6 MB). Free memory was 17.9 MB in the beginning and 19.3 MB in the end (delta: -1.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 14.3 GB. * Witness Printer took 6.37 ms. Allocated memory is still 71.3 MB. Free memory was 19.3 MB in the beginning and 18.5 MB in the end (delta: 799.6 kB). Peak memory consumption was 799.6 kB. Max. memory is 14.3 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: 3.9s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 1.8s, 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, 1.1s 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, 1.0s 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 0.1.25-9a8b2e8 [2020-10-20 06:07:56,930 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-10-20 06:07:57,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:07:57,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:07:57,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:07:57,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:07:57,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:07:57,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:07:57,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:07:57,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:07:57,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:07:57,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:07:57,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:07:57,063 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-20 06:07:57,087 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:07:57,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:07:57,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:07:57,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:07:57,090 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:07:57,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:07:57,090 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:07:57,091 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:07:57,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:07:57,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:07:57,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:07:57,092 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:07:57,092 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:07:57,092 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 06:07:57,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:07:57,093 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:07:57,093 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 06:07:57,093 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 06:07:57,094 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:07:57,094 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:07:57,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:07:57,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:07:57,095 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:07:57,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:07:57,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:07:57,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:07:57,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:07:57,096 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 06:07:57,097 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 06:07:57,097 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:07:57,097 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 06:07:57,097 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 [2020-10-20 06:07:57,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:07:57,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:07:57,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:07:57,353 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:07:57,354 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:07:57,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/simple-2.i [2020-10-20 06:07:57,442 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bd27ca74/d85a40c23f024a1c8858c632bf4b03e6/FLAG32aa153e7 [2020-10-20 06:07:58,182 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:07:58,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/simple-2.i [2020-10-20 06:07:58,212 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bd27ca74/d85a40c23f024a1c8858c632bf4b03e6/FLAG32aa153e7 [2020-10-20 06:07:58,429 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bd27ca74/d85a40c23f024a1c8858c632bf4b03e6 [2020-10-20 06:07:58,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:07:58,440 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:07:58,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:07:58,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:07:58,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:07:58,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:07:58" (1/1) ... [2020-10-20 06:07:58,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c51065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:58, skipping insertion in model container [2020-10-20 06:07:58,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:07:58" (1/1) ... [2020-10-20 06:07:58,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:07:58,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:07:58,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:07:58,951 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:07:59,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:07:59,103 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:07:59,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:59 WrapperNode [2020-10-20 06:07:59,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:07:59,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:07:59,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:07:59,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:07:59,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:59" (1/1) ... [2020-10-20 06:07:59,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:59" (1/1) ... [2020-10-20 06:07:59,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:59" (1/1) ... [2020-10-20 06:07:59,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:59" (1/1) ... [2020-10-20 06:07:59,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:59" (1/1) ... [2020-10-20 06:07:59,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:59" (1/1) ... [2020-10-20 06:07:59,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:59" (1/1) ... [2020-10-20 06:07:59,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:07:59,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:07:59,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:07:59,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:07:59,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:59" (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 [2020-10-20 06:07:59,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:07:59,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:07:59,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 06:07:59,246 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 06:07:59,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 06:07:59,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 06:07:59,247 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-20 06:07:59,247 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-20 06:07:59,247 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-20 06:07:59,247 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-20 06:07:59,247 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:07:59,247 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 06:07:59,248 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 06:07:59,248 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-20 06:07:59,248 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-20 06:07:59,248 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 06:07:59,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:07:59,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 06:07:59,249 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 06:07:59,249 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 06:07:59,249 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 06:07:59,249 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 06:07:59,249 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 06:07:59,250 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 06:07:59,250 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 06:07:59,250 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 06:07:59,250 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 06:07:59,250 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 06:07:59,250 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 06:07:59,250 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 06:07:59,251 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 06:07:59,251 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 06:07:59,251 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 06:07:59,251 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 06:07:59,251 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 06:07:59,251 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 06:07:59,251 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-20 06:07:59,252 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-20 06:07:59,252 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-20 06:07:59,252 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 06:07:59,252 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 06:07:59,252 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 06:07:59,252 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 06:07:59,252 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 06:07:59,253 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 06:07:59,253 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 06:07:59,253 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 06:07:59,253 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 06:07:59,253 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 06:07:59,253 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 06:07:59,253 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 06:07:59,254 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 06:07:59,254 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 06:07:59,254 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 06:07:59,254 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 06:07:59,254 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 06:07:59,254 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 06:07:59,254 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 06:07:59,255 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 06:07:59,255 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 06:07:59,255 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 06:07:59,255 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 06:07:59,255 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 06:07:59,255 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 06:07:59,255 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 06:07:59,256 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 06:07:59,256 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 06:07:59,256 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 06:07:59,256 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 06:07:59,256 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 06:07:59,256 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 06:07:59,256 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 06:07:59,256 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 06:07:59,257 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 06:07:59,257 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 06:07:59,257 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 06:07:59,257 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 06:07:59,257 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 06:07:59,257 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 06:07:59,257 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 06:07:59,258 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 06:07:59,258 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 06:07:59,258 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 06:07:59,258 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 06:07:59,258 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 06:07:59,258 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 06:07:59,258 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 06:07:59,259 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 06:07:59,259 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 06:07:59,259 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 06:07:59,259 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 06:07:59,259 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 06:07:59,259 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 06:07:59,259 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 06:07:59,260 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 06:07:59,260 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 06:07:59,260 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 06:07:59,260 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 06:07:59,260 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 06:07:59,260 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 06:07:59,260 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 06:07:59,260 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 06:07:59,261 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 06:07:59,261 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 06:07:59,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 06:07:59,261 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 06:07:59,261 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 06:07:59,261 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 06:07:59,261 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 06:07:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 06:07:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 06:07:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 06:07:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 06:07:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 06:07:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 06:07:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 06:07:59,263 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 06:07:59,263 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 06:07:59,263 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 06:07:59,263 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 06:07:59,263 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 06:07:59,263 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 06:07:59,263 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 06:07:59,264 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 06:07:59,264 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-20 06:07:59,264 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:07:59,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 06:07:59,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 06:07:59,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 06:07:59,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 06:07:59,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 06:07:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:07:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 06:07:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:07:59,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 06:07:59,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-20 06:07:59,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-20 06:07:59,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:07:59,695 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-20 06:07:59,942 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:07:59,942 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-20 06:07:59,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:07:59 BoogieIcfgContainer [2020-10-20 06:07:59,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:07:59,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:07:59,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:07:59,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:07:59,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:07:58" (1/3) ... [2020-10-20 06:07:59,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f5e577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:07:59, skipping insertion in model container [2020-10-20 06:07:59,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:59" (2/3) ... [2020-10-20 06:07:59,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f5e577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:07:59, skipping insertion in model container [2020-10-20 06:07:59,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:07:59" (3/3) ... [2020-10-20 06:07:59,954 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-2.i [2020-10-20 06:07:59,966 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:07:59,973 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-10-20 06:07:59,987 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-10-20 06:08:00,005 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:08:00,005 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:08:00,006 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:08:00,006 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:08:00,006 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:08:00,006 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:08:00,006 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:08:00,007 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:08:00,023 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-20 06:08:00,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 06:08:00,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:08:00,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:08:00,036 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]=== [2020-10-20 06:08:00,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:08:00,042 INFO L82 PathProgramCache]: Analyzing trace with hash 157453930, now seen corresponding path program 1 times [2020-10-20 06:08:00,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:08:00,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284071651] [2020-10-20 06:08:00,056 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 [2020-10-20 06:08:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:08:00,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 06:08:00,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:08:00,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:00,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:08:00,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:00,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284071651] [2020-10-20 06:08:00,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:08:00,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 06:08:00,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927288605] [2020-10-20 06:08:00,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 06:08:00,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:08:00,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 06:08:00,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 06:08:00,335 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2020-10-20 06:08:00,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:08:00,365 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2020-10-20 06:08:00,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 06:08:00,367 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-20 06:08:00,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:08:00,378 INFO L225 Difference]: With dead ends: 51 [2020-10-20 06:08:00,378 INFO L226 Difference]: Without dead ends: 44 [2020-10-20 06:08:00,380 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 [2020-10-20 06:08:00,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-20 06:08:00,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-20 06:08:00,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-20 06:08:00,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-10-20 06:08:00,431 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 10 [2020-10-20 06:08:00,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:08:00,431 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-10-20 06:08:00,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 06:08:00,432 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-10-20 06:08:00,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 06:08:00,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:08:00,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:08:00,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 06:08:00,646 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]=== [2020-10-20 06:08:00,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:08:00,646 INFO L82 PathProgramCache]: Analyzing trace with hash 157453248, now seen corresponding path program 1 times [2020-10-20 06:08:00,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:08:00,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555747254] [2020-10-20 06:08:00,647 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 [2020-10-20 06:08:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:08:00,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:08:00,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:08:00,838 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 [2020-10-20 06:08:00,839 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:00,843 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:00,843 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:00,844 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:08:00,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:00,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:08:00,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:00,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555747254] [2020-10-20 06:08:00,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:08:00,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-20 06:08:00,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234237242] [2020-10-20 06:08:00,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:08:00,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:08:00,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:08:00,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:08:00,881 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 4 states. [2020-10-20 06:08:01,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:08:01,097 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2020-10-20 06:08:01,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:08:01,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 06:08:01,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:08:01,099 INFO L225 Difference]: With dead ends: 51 [2020-10-20 06:08:01,099 INFO L226 Difference]: Without dead ends: 51 [2020-10-20 06:08:01,101 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 [2020-10-20 06:08:01,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-20 06:08:01,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2020-10-20 06:08:01,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-20 06:08:01,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-10-20 06:08:01,110 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 10 [2020-10-20 06:08:01,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:08:01,111 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-10-20 06:08:01,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:08:01,111 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-10-20 06:08:01,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 06:08:01,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:08:01,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:08:01,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 06:08:01,326 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]=== [2020-10-20 06:08:01,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:08:01,327 INFO L82 PathProgramCache]: Analyzing trace with hash 157453249, now seen corresponding path program 1 times [2020-10-20 06:08:01,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:08:01,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1118796699] [2020-10-20 06:08:01,328 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 [2020-10-20 06:08:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:08:01,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:08:01,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:08:01,459 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 [2020-10-20 06:08:01,460 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:01,468 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:01,468 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:01,469 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 06:08:01,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:01,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:08:01,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:01,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1118796699] [2020-10-20 06:08:01,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:08:01,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-20 06:08:01,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103309460] [2020-10-20 06:08:01,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:08:01,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:08:01,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:08:01,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:08:01,624 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 6 states. [2020-10-20 06:08:01,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:08:01,991 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2020-10-20 06:08:01,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:08:01,992 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-20 06:08:01,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:08:01,995 INFO L225 Difference]: With dead ends: 59 [2020-10-20 06:08:01,995 INFO L226 Difference]: Without dead ends: 59 [2020-10-20 06:08:01,995 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 [2020-10-20 06:08:01,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-20 06:08:02,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2020-10-20 06:08:02,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-20 06:08:02,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-20 06:08:02,003 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 10 [2020-10-20 06:08:02,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:08:02,004 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-20 06:08:02,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:08:02,004 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-20 06:08:02,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 06:08:02,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:08:02,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:08:02,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 06:08:02,206 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]=== [2020-10-20 06:08:02,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:08:02,206 INFO L82 PathProgramCache]: Analyzing trace with hash 5227808, now seen corresponding path program 1 times [2020-10-20 06:08:02,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:08:02,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1425513822] [2020-10-20 06:08:02,208 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 [2020-10-20 06:08:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:08:02,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:08:02,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:08:02,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:02,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:08:02,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:02,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1425513822] [2020-10-20 06:08:02,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:08:02,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-20 06:08:02,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344316191] [2020-10-20 06:08:02,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:08:02,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:08:02,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:08:02,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:08:02,358 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 4 states. [2020-10-20 06:08:02,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:08:02,519 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2020-10-20 06:08:02,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:08:02,520 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-20 06:08:02,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:08:02,521 INFO L225 Difference]: With dead ends: 56 [2020-10-20 06:08:02,521 INFO L226 Difference]: Without dead ends: 56 [2020-10-20 06:08:02,522 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 [2020-10-20 06:08:02,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-20 06:08:02,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2020-10-20 06:08:02,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-20 06:08:02,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-10-20 06:08:02,528 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 15 [2020-10-20 06:08:02,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:08:02,528 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-10-20 06:08:02,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:08:02,528 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-10-20 06:08:02,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 06:08:02,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:08:02,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:08:02,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-20 06:08:02,734 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]=== [2020-10-20 06:08:02,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:08:02,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1162167200, now seen corresponding path program 1 times [2020-10-20 06:08:02,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:08:02,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091708483] [2020-10-20 06:08:02,736 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 [2020-10-20 06:08:02,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:08:02,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:08:02,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:08:02,876 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 [2020-10-20 06:08:02,877 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:02,886 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:02,887 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:02,887 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-10-20 06:08:02,945 INFO L350 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-10-20 06:08:02,946 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 [2020-10-20 06:08:02,947 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:02,952 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:02,953 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:02,953 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:9 [2020-10-20 06:08:02,982 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 17 treesize of output 9 [2020-10-20 06:08:02,983 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:02,987 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:02,987 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:02,988 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:3 [2020-10-20 06:08:03,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:03,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:08:03,022 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:08:03,027 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:03,028 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:08:03,029 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:17 [2020-10-20 06:08:03,078 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 [2020-10-20 06:08:03,089 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:03,143 INFO L625 ElimStorePlain]: treesize reduction 34, result has 39.3 percent of original size [2020-10-20 06:08:03,144 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-10-20 06:08:03,145 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2020-10-20 06:08:03,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:03,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091708483] [2020-10-20 06:08:03,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:08:03,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2020-10-20 06:08:03,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374755159] [2020-10-20 06:08:03,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:08:03,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:08:03,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:08:03,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:08:03,153 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 8 states. [2020-10-20 06:08:03,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:08:03,604 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2020-10-20 06:08:03,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:08:03,605 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-10-20 06:08:03,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:08:03,606 INFO L225 Difference]: With dead ends: 86 [2020-10-20 06:08:03,606 INFO L226 Difference]: Without dead ends: 86 [2020-10-20 06:08:03,607 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 [2020-10-20 06:08:03,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-20 06:08:03,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 56. [2020-10-20 06:08:03,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-20 06:08:03,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2020-10-20 06:08:03,614 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 18 [2020-10-20 06:08:03,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:08:03,614 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2020-10-20 06:08:03,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:08:03,615 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2020-10-20 06:08:03,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 06:08:03,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:08:03,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:08:03,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-20 06:08:03,837 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]=== [2020-10-20 06:08:03,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:08:03,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1469140663, now seen corresponding path program 1 times [2020-10-20 06:08:03,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:08:03,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429013312] [2020-10-20 06:08:03,838 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 [2020-10-20 06:08:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:08:03,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:08:03,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:08:03,978 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 [2020-10-20 06:08:03,978 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:03,981 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:03,981 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:03,981 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:08:04,010 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 [2020-10-20 06:08:04,011 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:04,018 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:04,019 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:04,019 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-10-20 06:08:04,044 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 23 treesize of output 11 [2020-10-20 06:08:04,045 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:04,052 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:04,052 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:04,052 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-10-20 06:08:04,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:04,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:08:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:04,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429013312] [2020-10-20 06:08:04,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:08:04,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-20 06:08:04,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067428603] [2020-10-20 06:08:04,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:08:04,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:08:04,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:08:04,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:08:04,099 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 6 states. [2020-10-20 06:08:04,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:08:04,458 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2020-10-20 06:08:04,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:08:04,459 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-20 06:08:04,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:08:04,460 INFO L225 Difference]: With dead ends: 67 [2020-10-20 06:08:04,460 INFO L226 Difference]: Without dead ends: 67 [2020-10-20 06:08:04,461 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 [2020-10-20 06:08:04,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-20 06:08:04,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 54. [2020-10-20 06:08:04,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-20 06:08:04,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-10-20 06:08:04,466 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 17 [2020-10-20 06:08:04,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:08:04,466 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-10-20 06:08:04,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:08:04,467 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-10-20 06:08:04,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 06:08:04,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:08:04,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:08:04,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-20 06:08:04,675 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]=== [2020-10-20 06:08:04,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:08:04,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1469140664, now seen corresponding path program 1 times [2020-10-20 06:08:04,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:08:04,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1051350165] [2020-10-20 06:08:04,677 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 [2020-10-20 06:08:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:08:04,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 06:08:04,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:08:04,802 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 [2020-10-20 06:08:04,802 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:04,808 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:04,808 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:04,808 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 06:08:04,833 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 [2020-10-20 06:08:04,833 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:04,848 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:04,855 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 [2020-10-20 06:08:04,856 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:04,867 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:04,868 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:04,868 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2020-10-20 06:08:04,902 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 [2020-10-20 06:08:04,903 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:04,917 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:04,920 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 [2020-10-20 06:08:04,921 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:04,927 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:04,927 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:04,927 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-10-20 06:08:04,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:04,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:08:05,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:05,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1051350165] [2020-10-20 06:08:05,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:08:05,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-10-20 06:08:05,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537559082] [2020-10-20 06:08:05,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 06:08:05,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:08:05,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:08:05,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:08:05,180 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 10 states. [2020-10-20 06:08:06,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:08:06,085 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2020-10-20 06:08:06,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:08:06,086 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-20 06:08:06,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:08:06,087 INFO L225 Difference]: With dead ends: 63 [2020-10-20 06:08:06,087 INFO L226 Difference]: Without dead ends: 63 [2020-10-20 06:08:06,088 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 [2020-10-20 06:08:06,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-20 06:08:06,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 44. [2020-10-20 06:08:06,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-20 06:08:06,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-10-20 06:08:06,093 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 17 [2020-10-20 06:08:06,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:08:06,093 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-10-20 06:08:06,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 06:08:06,093 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-10-20 06:08:06,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 06:08:06,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:08:06,094 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:08:06,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-20 06:08:06,298 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]=== [2020-10-20 06:08:06,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:08:06,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1671545519, now seen corresponding path program 1 times [2020-10-20 06:08:06,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:08:06,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530344904] [2020-10-20 06:08:06,300 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 [2020-10-20 06:08:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:08:06,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 06:08:06,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:08:06,431 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 [2020-10-20 06:08:06,431 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:06,444 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:06,450 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 [2020-10-20 06:08:06,450 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:06,460 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:06,461 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:06,461 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:19 [2020-10-20 06:08:06,531 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 [2020-10-20 06:08:06,532 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:06,544 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:06,547 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 [2020-10-20 06:08:06,548 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:06,566 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:06,567 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:06,567 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:7 [2020-10-20 06:08:06,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:06,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:08:06,651 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 [2020-10-20 06:08:06,653 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-20 06:08:06,678 INFO L625 ElimStorePlain]: treesize reduction 19, result has 36.7 percent of original size [2020-10-20 06:08:06,678 INFO L513 ElimStorePlain]: Eliminatee |#memory_$Pointer$.base| vanished before elimination [2020-10-20 06:08:06,679 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-10-20 06:08:06,679 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:11 [2020-10-20 06:08:06,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:06,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530344904] [2020-10-20 06:08:06,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:08:06,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-20 06:08:06,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547725952] [2020-10-20 06:08:06,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:08:06,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:08:06,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:08:06,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:08:06,688 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 7 states. [2020-10-20 06:08:11,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:08:11,315 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2020-10-20 06:08:11,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:08:11,316 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-20 06:08:11,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:08:11,316 INFO L225 Difference]: With dead ends: 55 [2020-10-20 06:08:11,317 INFO L226 Difference]: Without dead ends: 55 [2020-10-20 06:08:11,317 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 [2020-10-20 06:08:11,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-20 06:08:11,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 47. [2020-10-20 06:08:11,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-20 06:08:11,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2020-10-20 06:08:11,322 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 19 [2020-10-20 06:08:11,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:08:11,322 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2020-10-20 06:08:11,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:08:11,323 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2020-10-20 06:08:11,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 06:08:11,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:08:11,324 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] [2020-10-20 06:08:11,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-20 06:08:11,527 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]=== [2020-10-20 06:08:11,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:08:11,528 INFO L82 PathProgramCache]: Analyzing trace with hash 278302293, now seen corresponding path program 1 times [2020-10-20 06:08:11,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:08:11,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254957001] [2020-10-20 06:08:11,530 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 [2020-10-20 06:08:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:08:11,767 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:08:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:08:11,804 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:08:11,847 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-20 06:08:11,847 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:08:12,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-10-20 06:08:12,064 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-10-20 06:08:12,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:08:12 BoogieIcfgContainer [2020-10-20 06:08:12,080 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:08:12,081 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:08:12,081 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:08:12,081 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:08:12,082 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:07:59" (3/4) ... [2020-10-20 06:08:12,086 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:08:12,086 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:08:12,088 INFO L168 Benchmark]: Toolchain (without parser) took 13653.22 ms. Allocated memory was 40.9 MB in the beginning and 84.4 MB in the end (delta: 43.5 MB). Free memory was 17.6 MB in the beginning and 45.1 MB in the end (delta: -27.5 MB). Peak memory consumption was 16.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:08:12,089 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 30.9 MB. Free memory was 7.8 MB in the beginning and 7.7 MB in the end (delta: 68.3 kB). Peak memory consumption was 68.3 kB. Max. memory is 14.3 GB. [2020-10-20 06:08:12,089 INFO L168 Benchmark]: CACSL2BoogieTranslator took 662.64 ms. Allocated memory was 40.9 MB in the beginning and 44.0 MB in the end (delta: 3.1 MB). Free memory was 16.8 MB in the beginning and 23.0 MB in the end (delta: -6.2 MB). Peak memory consumption was 8.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:08:12,090 INFO L168 Benchmark]: Boogie Preprocessor took 80.24 ms. Allocated memory is still 44.0 MB. Free memory was 23.0 MB in the beginning and 19.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:08:12,091 INFO L168 Benchmark]: RCFGBuilder took 759.53 ms. Allocated memory was 44.0 MB in the beginning and 47.2 MB in the end (delta: 3.1 MB). Free memory was 19.7 MB in the beginning and 28.4 MB in the end (delta: -8.7 MB). Peak memory consumption was 14.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:08:12,091 INFO L168 Benchmark]: TraceAbstraction took 12134.82 ms. Allocated memory was 47.2 MB in the beginning and 84.4 MB in the end (delta: 37.2 MB). Free memory was 27.6 MB in the beginning and 46.0 MB in the end (delta: -18.4 MB). Peak memory consumption was 18.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:08:12,092 INFO L168 Benchmark]: Witness Printer took 5.53 ms. Allocated memory is still 84.4 MB. Free memory was 46.0 MB in the beginning and 45.1 MB in the end (delta: 947.9 kB). Peak memory consumption was 947.9 kB. Max. memory is 14.3 GB. [2020-10-20 06:08:12,095 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 30.9 MB. Free memory was 7.8 MB in the beginning and 7.7 MB in the end (delta: 68.3 kB). Peak memory consumption was 68.3 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 662.64 ms. Allocated memory was 40.9 MB in the beginning and 44.0 MB in the end (delta: 3.1 MB). Free memory was 16.8 MB in the beginning and 23.0 MB in the end (delta: -6.2 MB). Peak memory consumption was 8.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 80.24 ms. Allocated memory is still 44.0 MB. Free memory was 23.0 MB in the beginning and 19.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 759.53 ms. Allocated memory was 44.0 MB in the beginning and 47.2 MB in the end (delta: 3.1 MB). Free memory was 19.7 MB in the beginning and 28.4 MB in the end (delta: -8.7 MB). Peak memory consumption was 14.3 MB. Max. memory is 14.3 GB. * TraceAbstraction took 12134.82 ms. Allocated memory was 47.2 MB in the beginning and 84.4 MB in the end (delta: 37.2 MB). Free memory was 27.6 MB in the beginning and 46.0 MB in the end (delta: -18.4 MB). Peak memory consumption was 18.8 MB. Max. memory is 14.3 GB. * Witness Printer took 5.53 ms. Allocated memory is still 84.4 MB. Free memory was 46.0 MB in the beginning and 45.1 MB in the end (delta: 947.9 kB). Peak memory consumption was 947.9 kB. Max. memory is 14.3 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: 12.0s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 7.1s, 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, 5.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 244 GetRequests, 194 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.1s 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, 1.5s 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...