./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/test-0158_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5fbdf5bf 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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-ext-properties/test-0158_1-2.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 8fdeb5a608a809e67439a428636d313b7ceb3d25 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-ext-properties/test-0158_1-2.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 8fdeb5a608a809e67439a428636d313b7ceb3d25 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 17:34:10,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 17:34:10,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 17:34:10,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 17:34:10,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 17:34:10,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 17:34:10,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 17:34:10,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 17:34:10,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 17:34:10,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 17:34:10,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 17:34:10,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 17:34:10,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 17:34:10,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 17:34:10,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 17:34:10,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 17:34:10,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 17:34:10,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 17:34:10,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 17:34:10,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 17:34:10,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 17:34:10,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 17:34:10,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 17:34:10,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 17:34:10,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 17:34:10,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 17:34:10,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 17:34:10,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 17:34:10,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 17:34:10,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 17:34:10,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 17:34:10,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 17:34:10,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 17:34:10,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 17:34:10,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 17:34:10,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 17:34:10,789 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 17:34:10,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 17:34:10,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 17:34:10,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 17:34:10,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 17:34:10,792 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-30 17:34:10,826 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 17:34:10,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 17:34:10,828 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 17:34:10,828 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 17:34:10,830 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 17:34:10,830 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 17:34:10,830 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 17:34:10,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 17:34:10,831 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 17:34:10,831 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 17:34:10,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 17:34:10,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 17:34:10,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 17:34:10,832 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 17:34:10,833 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 17:34:10,833 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 17:34:10,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 17:34:10,833 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 17:34:10,833 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 17:34:10,834 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 17:34:10,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 17:34:10,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 17:34:10,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 17:34:10,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:34:10,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 17:34:10,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 17:34:10,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 17:34:10,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 17:34:10,836 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 17:34:10,836 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fdeb5a608a809e67439a428636d313b7ceb3d25 [2021-08-30 17:34:11,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 17:34:11,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 17:34:11,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 17:34:11,182 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 17:34:11,183 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 17:34:11,184 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/test-0158_1-2.i [2021-08-30 17:34:11,240 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e679a091e/a40c9a8fe5da4ccfab548bede7ea06fa/FLAGbb9c17001 [2021-08-30 17:34:11,680 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 17:34:11,681 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/test-0158_1-2.i [2021-08-30 17:34:11,702 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e679a091e/a40c9a8fe5da4ccfab548bede7ea06fa/FLAGbb9c17001 [2021-08-30 17:34:12,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e679a091e/a40c9a8fe5da4ccfab548bede7ea06fa [2021-08-30 17:34:12,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 17:34:12,049 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 17:34:12,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 17:34:12,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 17:34:12,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 17:34:12,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:34:12" (1/1) ... [2021-08-30 17:34:12,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@791044c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:12, skipping insertion in model container [2021-08-30 17:34:12,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:34:12" (1/1) ... [2021-08-30 17:34:12,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 17:34:12,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:34:12,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:34:12,363 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 17:34:12,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:34:12,443 INFO L208 MainTranslator]: Completed translation [2021-08-30 17:34:12,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:12 WrapperNode [2021-08-30 17:34:12,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 17:34:12,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 17:34:12,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 17:34:12,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 17:34:12,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:12" (1/1) ... [2021-08-30 17:34:12,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:12" (1/1) ... [2021-08-30 17:34:12,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:12" (1/1) ... [2021-08-30 17:34:12,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:12" (1/1) ... [2021-08-30 17:34:12,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:12" (1/1) ... [2021-08-30 17:34:12,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:12" (1/1) ... [2021-08-30 17:34:12,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:12" (1/1) ... [2021-08-30 17:34:12,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 17:34:12,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 17:34:12,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 17:34:12,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 17:34:12,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:12" (1/1) ... [2021-08-30 17:34:12,527 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:34:12,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:34:12,554 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-30 17:34:12,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-30 17:34:12,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 17:34:12,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 17:34:12,590 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-30 17:34:12,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-30 17:34:12,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-30 17:34:12,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-30 17:34:12,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-30 17:34:12,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-30 17:34:12,592 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 17:34:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 17:34:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-30 17:34:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-30 17:34:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-30 17:34:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-30 17:34:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 17:34:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 17:34:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 17:34:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 17:34:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 17:34:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 17:34:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 17:34:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 17:34:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 17:34:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 17:34:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 17:34:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 17:34:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 17:34:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 17:34:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 17:34:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 17:34:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 17:34:12,596 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-30 17:34:12,596 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-30 17:34:12,596 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-30 17:34:12,596 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-30 17:34:12,596 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-30 17:34:12,596 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 17:34:12,597 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 17:34:12,597 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 17:34:12,597 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 17:34:12,597 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 17:34:12,597 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 17:34:12,597 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 17:34:12,598 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 17:34:12,598 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 17:34:12,598 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 17:34:12,598 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 17:34:12,598 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 17:34:12,599 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 17:34:12,599 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 17:34:12,599 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 17:34:12,600 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 17:34:12,600 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 17:34:12,600 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 17:34:12,600 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 17:34:12,600 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 17:34:12,601 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 17:34:12,601 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 17:34:12,601 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 17:34:12,601 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 17:34:12,601 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 17:34:12,601 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 17:34:12,602 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 17:34:12,602 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 17:34:12,602 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 17:34:12,602 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 17:34:12,602 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 17:34:12,602 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 17:34:12,603 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 17:34:12,604 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 17:34:12,604 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 17:34:12,604 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 17:34:12,604 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 17:34:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 17:34:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 17:34:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 17:34:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 17:34:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 17:34:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 17:34:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 17:34:12,606 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 17:34:12,606 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 17:34:12,606 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 17:34:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 17:34:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 17:34:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 17:34:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 17:34:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 17:34:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 17:34:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 17:34:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 17:34:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 17:34:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 17:34:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 17:34:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 17:34:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 17:34:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 17:34:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 17:34:12,609 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 17:34:12,609 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 17:34:12,609 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 17:34:12,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 17:34:12,609 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 17:34:12,609 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 17:34:12,609 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 17:34:12,609 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 17:34:12,610 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 17:34:12,610 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 17:34:12,610 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 17:34:12,610 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 17:34:12,610 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 17:34:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 17:34:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 17:34:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 17:34:12,612 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 17:34:12,612 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 17:34:12,612 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 17:34:12,612 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 17:34:12,612 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 17:34:12,612 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 17:34:12,612 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 17:34:12,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 17:34:12,613 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 17:34:12,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 17:34:12,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 17:34:12,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-30 17:34:12,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-30 17:34:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 17:34:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 17:34:12,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-30 17:34:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 17:34:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 17:34:12,935 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 17:34:12,939 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-30 17:34:12,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:34:12 BoogieIcfgContainer [2021-08-30 17:34:12,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 17:34:12,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 17:34:12,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 17:34:12,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 17:34:12,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:34:12" (1/3) ... [2021-08-30 17:34:12,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719b49a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:34:12, skipping insertion in model container [2021-08-30 17:34:12,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:12" (2/3) ... [2021-08-30 17:34:12,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719b49a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:34:12, skipping insertion in model container [2021-08-30 17:34:12,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:34:12" (3/3) ... [2021-08-30 17:34:12,950 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158_1-2.i [2021-08-30 17:34:12,954 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 17:34:12,954 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-08-30 17:34:12,994 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 17:34:13,000 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-30 17:34:13,001 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-08-30 17:34:13,014 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 25 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 17:34:13,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 17:34:13,019 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:34:13,020 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:34:13,020 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 6 more)] === [2021-08-30 17:34:13,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:34:13,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1484797383, now seen corresponding path program 1 times [2021-08-30 17:34:13,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:34:13,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034699289] [2021-08-30 17:34:13,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:34:13,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:34:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:34:13,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:34:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:34:13,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:34:13,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:34:13,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034699289] [2021-08-30 17:34:13,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034699289] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:34:13,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:34:13,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 17:34:13,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124041018] [2021-08-30 17:34:13,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 17:34:13,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:34:13,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 17:34:13,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 17:34:13,362 INFO L87 Difference]: Start difference. First operand has 30 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 25 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:13,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:34:13,437 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2021-08-30 17:34:13,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 17:34:13,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-30 17:34:13,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:34:13,445 INFO L225 Difference]: With dead ends: 25 [2021-08-30 17:34:13,446 INFO L226 Difference]: Without dead ends: 22 [2021-08-30 17:34:13,447 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.41ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 17:34:13,452 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.53ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.78ms IncrementalHoareTripleChecker+Time [2021-08-30 17:34:13,453 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 10 Invalid, 55 Unknown, 0 Unchecked, 3.53ms Time], IncrementalHoareTripleChecker [5 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 55.78ms Time] [2021-08-30 17:34:13,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-08-30 17:34:13,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-08-30 17:34:13,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 18 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:13,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-08-30 17:34:13,482 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 7 [2021-08-30 17:34:13,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:34:13,483 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-08-30 17:34:13,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:13,483 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-08-30 17:34:13,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 17:34:13,483 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:34:13,484 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:34:13,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 17:34:13,485 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 6 more)] === [2021-08-30 17:34:13,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:34:13,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1484797382, now seen corresponding path program 1 times [2021-08-30 17:34:13,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:34:13,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199110124] [2021-08-30 17:34:13,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:34:13,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:34:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:34:13,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:34:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:34:13,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:34:13,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:34:13,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199110124] [2021-08-30 17:34:13,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199110124] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:34:13,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:34:13,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 17:34:13,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914118424] [2021-08-30 17:34:13,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 17:34:13,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:34:13,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 17:34:13,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 17:34:13,627 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:13,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:34:13,666 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-08-30 17:34:13,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 17:34:13,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-30 17:34:13,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:34:13,667 INFO L225 Difference]: With dead ends: 17 [2021-08-30 17:34:13,667 INFO L226 Difference]: Without dead ends: 17 [2021-08-30 17:34:13,668 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.08ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 17:34:13,669 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.59ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.27ms IncrementalHoareTripleChecker+Time [2021-08-30 17:34:13,669 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 7 Invalid, 39 Unknown, 0 Unchecked, 0.59ms Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 35.27ms Time] [2021-08-30 17:34:13,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-08-30 17:34:13,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-08-30 17:34:13,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:13,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-08-30 17:34:13,673 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 7 [2021-08-30 17:34:13,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:34:13,673 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-08-30 17:34:13,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:13,673 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-08-30 17:34:13,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-30 17:34:13,674 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:34:13,674 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:34:13,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 17:34:13,675 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr10ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 6 more)] === [2021-08-30 17:34:13,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:34:13,675 INFO L82 PathProgramCache]: Analyzing trace with hash 910104040, now seen corresponding path program 1 times [2021-08-30 17:34:13,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:34:13,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154972949] [2021-08-30 17:34:13,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:34:13,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:34:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:34:13,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:34:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:34:13,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:34:13,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:34:13,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154972949] [2021-08-30 17:34:13,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154972949] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:34:13,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:34:13,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 17:34:13,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118421518] [2021-08-30 17:34:13,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:34:13,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:34:13,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:34:13,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:34:13,775 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:13,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:34:13,842 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-08-30 17:34:13,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:34:13,842 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-08-30 17:34:13,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:34:13,844 INFO L225 Difference]: With dead ends: 21 [2021-08-30 17:34:13,844 INFO L226 Difference]: Without dead ends: 21 [2021-08-30 17:34:13,844 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.69ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:34:13,849 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.59ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.01ms IncrementalHoareTripleChecker+Time [2021-08-30 17:34:13,851 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 10 Invalid, 66 Unknown, 0 Unchecked, 1.59ms Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 45.01ms Time] [2021-08-30 17:34:13,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-08-30 17:34:13,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-08-30 17:34:13,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:13,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-08-30 17:34:13,856 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2021-08-30 17:34:13,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:34:13,857 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-08-30 17:34:13,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:13,857 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-08-30 17:34:13,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-30 17:34:13,858 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:34:13,858 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:34:13,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-30 17:34:13,858 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr10ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 6 more)] === [2021-08-30 17:34:13,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:34:13,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1057867400, now seen corresponding path program 1 times [2021-08-30 17:34:13,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:34:13,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246480216] [2021-08-30 17:34:13,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:34:13,860 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:34:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 17:34:13,903 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-30 17:34:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 17:34:13,953 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-30 17:34:13,953 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-30 17:34:13,954 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr10ENSURES_VIOLATIONMEMORY_LEAK (10 of 11 remaining) [2021-08-30 17:34:13,955 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (9 of 11 remaining) [2021-08-30 17:34:13,956 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (8 of 11 remaining) [2021-08-30 17:34:13,956 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION (7 of 11 remaining) [2021-08-30 17:34:13,956 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (6 of 11 remaining) [2021-08-30 17:34:13,956 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION (5 of 11 remaining) [2021-08-30 17:34:13,956 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION (4 of 11 remaining) [2021-08-30 17:34:13,957 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION (3 of 11 remaining) [2021-08-30 17:34:13,957 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION (2 of 11 remaining) [2021-08-30 17:34:13,957 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION (1 of 11 remaining) [2021-08-30 17:34:13,957 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION (0 of 11 remaining) [2021-08-30 17:34:13,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-30 17:34:13,964 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 17:34:13,974 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-30 17:34:13,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:34:13 BoogieIcfgContainer [2021-08-30 17:34:13,983 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 17:34:13,984 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 17:34:13,984 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 17:34:13,984 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 17:34:13,985 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:34:12" (3/4) ... [2021-08-30 17:34:13,988 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-30 17:34:13,988 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 17:34:13,988 INFO L158 Benchmark]: Toolchain (without parser) took 1939.53ms. Allocated memory was 52.4MB in the beginning and 83.9MB in the end (delta: 31.5MB). Free memory was 27.7MB in the beginning and 56.3MB in the end (delta: -28.7MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. [2021-08-30 17:34:13,989 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 52.4MB. Free memory is still 33.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:34:13,989 INFO L158 Benchmark]: CACSL2BoogieTranslator took 393.54ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 27.5MB in the beginning and 44.5MB in the end (delta: -17.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-30 17:34:13,990 INFO L158 Benchmark]: Boogie Preprocessor took 73.23ms. Allocated memory is still 67.1MB. Free memory was 44.5MB in the beginning and 42.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 17:34:13,990 INFO L158 Benchmark]: RCFGBuilder took 422.12ms. Allocated memory is still 67.1MB. Free memory was 41.9MB in the beginning and 40.4MB in the end (delta: 1.5MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2021-08-30 17:34:13,990 INFO L158 Benchmark]: TraceAbstraction took 1040.61ms. Allocated memory was 67.1MB in the beginning and 83.9MB in the end (delta: 16.8MB). Free memory was 39.8MB in the beginning and 56.9MB in the end (delta: -17.1MB). Peak memory consumption was 13.6kB. Max. memory is 16.1GB. [2021-08-30 17:34:13,991 INFO L158 Benchmark]: Witness Printer took 3.96ms. Allocated memory is still 83.9MB. Free memory was 56.9MB in the beginning and 56.3MB in the end (delta: 538.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:34:13,992 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 52.4MB. Free memory is still 33.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 393.54ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 27.5MB in the beginning and 44.5MB in the end (delta: -17.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.23ms. Allocated memory is still 67.1MB. Free memory was 44.5MB in the beginning and 42.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 422.12ms. Allocated memory is still 67.1MB. Free memory was 41.9MB in the beginning and 40.4MB in the end (delta: 1.5MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1040.61ms. Allocated memory was 67.1MB in the beginning and 83.9MB in the end (delta: 16.8MB). Free memory was 39.8MB in the beginning and 56.9MB in the end (delta: -17.1MB). Peak memory consumption was 13.6kB. Max. memory is 16.1GB. * Witness Printer took 3.96ms. Allocated memory is still 83.9MB. Free memory was 56.9MB in the beginning and 56.3MB in the end (delta: 538.0kB). There was no memory consumed. Max. memory is 16.1GB. * 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: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 524]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 524. Possible FailurePath: [L526-L533] union { void *p0; struct { char c[2]; int p1; int p2; } str; } data; [L534] data.p0 = malloc(37U) VAL [data={3:0}, malloc(37U)={-1:0}] [L535] COND FALSE !(__VERIFIER_nondet_int()) [L538] data.str.p2 = 30 VAL [data={3:0}] [L540] EXPR data.str.p2 VAL [data={3:0}, data.str.p2=30] [L540] COND FALSE !(25 > data.str.p2) [L543] return 0; [L543] return 0; VAL [\result=0] - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 48 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 970.53ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 10.48ms, AutomataDifference: 241.85ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 9.88ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 136.06ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 27 SdHoareTripleChecker+Invalid, 107.99ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 41 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 147 IncrementalHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 10 mSDtfsCounter, 147 mSolverCounterSat, 5.72ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 112.18ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 24.38ms AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 34.85ms SsaConstructionTime, 105.46ms SatisfiabilityAnalysisTime, 332.25ms InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 119 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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 [2021-08-30 17:34:14,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 17:34:15,740 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 17:34:15,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 17:34:15,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 17:34:15,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 17:34:15,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 17:34:15,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 17:34:15,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 17:34:15,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 17:34:15,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 17:34:15,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 17:34:15,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 17:34:15,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 17:34:15,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 17:34:15,811 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 17:34:15,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 17:34:15,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 17:34:15,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 17:34:15,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 17:34:15,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 17:34:15,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 17:34:15,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 17:34:15,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 17:34:15,828 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 17:34:15,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 17:34:15,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 17:34:15,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 17:34:15,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 17:34:15,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 17:34:15,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 17:34:15,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 17:34:15,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 17:34:15,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 17:34:15,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 17:34:15,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 17:34:15,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 17:34:15,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 17:34:15,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 17:34:15,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 17:34:15,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 17:34:15,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 17:34:15,844 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-30 17:34:15,878 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 17:34:15,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 17:34:15,879 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 17:34:15,879 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 17:34:15,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 17:34:15,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 17:34:15,882 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 17:34:15,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 17:34:15,882 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 17:34:15,882 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 17:34:15,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 17:34:15,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 17:34:15,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 17:34:15,883 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 17:34:15,883 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 17:34:15,883 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 17:34:15,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 17:34:15,892 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 17:34:15,893 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-30 17:34:15,893 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-30 17:34:15,893 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 17:34:15,893 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 17:34:15,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 17:34:15,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 17:34:15,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 17:34:15,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:34:15,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 17:34:15,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 17:34:15,894 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-30 17:34:15,894 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-30 17:34:15,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 17:34:15,895 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-30 17:34:15,895 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fdeb5a608a809e67439a428636d313b7ceb3d25 [2021-08-30 17:34:16,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 17:34:16,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 17:34:16,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 17:34:16,241 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 17:34:16,241 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 17:34:16,242 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/test-0158_1-2.i [2021-08-30 17:34:16,308 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/737e4d6a6/b3e120577d034dc9a60f4e577b482fdd/FLAG3b37eabbc [2021-08-30 17:34:16,730 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 17:34:16,738 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/test-0158_1-2.i [2021-08-30 17:34:16,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/737e4d6a6/b3e120577d034dc9a60f4e577b482fdd/FLAG3b37eabbc [2021-08-30 17:34:16,766 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/737e4d6a6/b3e120577d034dc9a60f4e577b482fdd [2021-08-30 17:34:16,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 17:34:16,773 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 17:34:16,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 17:34:16,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 17:34:16,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 17:34:16,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:34:16" (1/1) ... [2021-08-30 17:34:16,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c2ec3ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:16, skipping insertion in model container [2021-08-30 17:34:16,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:34:16" (1/1) ... [2021-08-30 17:34:16,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 17:34:16,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:34:17,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:34:17,089 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 17:34:17,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:34:17,149 INFO L208 MainTranslator]: Completed translation [2021-08-30 17:34:17,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:17 WrapperNode [2021-08-30 17:34:17,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 17:34:17,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 17:34:17,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 17:34:17,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 17:34:17,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:17" (1/1) ... [2021-08-30 17:34:17,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:17" (1/1) ... [2021-08-30 17:34:17,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:17" (1/1) ... [2021-08-30 17:34:17,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:17" (1/1) ... [2021-08-30 17:34:17,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:17" (1/1) ... [2021-08-30 17:34:17,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:17" (1/1) ... [2021-08-30 17:34:17,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:17" (1/1) ... [2021-08-30 17:34:17,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 17:34:17,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 17:34:17,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 17:34:17,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 17:34:17,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:17" (1/1) ... [2021-08-30 17:34:17,243 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:34:17,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:34:17,262 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-30 17:34:17,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-30 17:34:17,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 17:34:17,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 17:34:17,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 17:34:17,303 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-30 17:34:17,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-30 17:34:17,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-30 17:34:17,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-30 17:34:17,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-30 17:34:17,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-30 17:34:17,305 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 17:34:17,305 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 17:34:17,305 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-30 17:34:17,305 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-30 17:34:17,305 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-30 17:34:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-30 17:34:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 17:34:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 17:34:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 17:34:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 17:34:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 17:34:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 17:34:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 17:34:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 17:34:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 17:34:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 17:34:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 17:34:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 17:34:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 17:34:17,315 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 17:34:17,315 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 17:34:17,316 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 17:34:17,316 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 17:34:17,316 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-30 17:34:17,316 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-30 17:34:17,316 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-30 17:34:17,316 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-30 17:34:17,317 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-30 17:34:17,317 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 17:34:17,317 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 17:34:17,317 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 17:34:17,317 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 17:34:17,317 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 17:34:17,318 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 17:34:17,318 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 17:34:17,318 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 17:34:17,318 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 17:34:17,319 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 17:34:17,319 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 17:34:17,319 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 17:34:17,319 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 17:34:17,320 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 17:34:17,320 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 17:34:17,320 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 17:34:17,320 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 17:34:17,321 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 17:34:17,321 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 17:34:17,321 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 17:34:17,321 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 17:34:17,321 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 17:34:17,321 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 17:34:17,321 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 17:34:17,322 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 17:34:17,322 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 17:34:17,322 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 17:34:17,323 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 17:34:17,323 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 17:34:17,323 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 17:34:17,324 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 17:34:17,324 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 17:34:17,324 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 17:34:17,324 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 17:34:17,325 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 17:34:17,325 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 17:34:17,325 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 17:34:17,325 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 17:34:17,325 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 17:34:17,325 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 17:34:17,325 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 17:34:17,326 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 17:34:17,326 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 17:34:17,326 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 17:34:17,326 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 17:34:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 17:34:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 17:34:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 17:34:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 17:34:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 17:34:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 17:34:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 17:34:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 17:34:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 17:34:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 17:34:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 17:34:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 17:34:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 17:34:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 17:34:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 17:34:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 17:34:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 17:34:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 17:34:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 17:34:17,330 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 17:34:17,330 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 17:34:17,330 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 17:34:17,330 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 17:34:17,330 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 17:34:17,331 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 17:34:17,331 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 17:34:17,331 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 17:34:17,332 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 17:34:17,332 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 17:34:17,332 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 17:34:17,332 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 17:34:17,332 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 17:34:17,332 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 17:34:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 17:34:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 17:34:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 17:34:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 17:34:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 17:34:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 17:34:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 17:34:17,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 17:34:17,334 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 17:34:17,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 17:34:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 17:34:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-30 17:34:17,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-30 17:34:17,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-08-30 17:34:17,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 17:34:17,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 17:34:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-30 17:34:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 17:34:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 17:34:17,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-08-30 17:34:17,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 17:34:17,743 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 17:34:17,751 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-30 17:34:17,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:34:17 BoogieIcfgContainer [2021-08-30 17:34:17,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 17:34:17,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 17:34:17,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 17:34:17,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 17:34:17,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:34:16" (1/3) ... [2021-08-30 17:34:17,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225b30f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:34:17, skipping insertion in model container [2021-08-30 17:34:17,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:17" (2/3) ... [2021-08-30 17:34:17,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225b30f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:34:17, skipping insertion in model container [2021-08-30 17:34:17,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:34:17" (3/3) ... [2021-08-30 17:34:17,769 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158_1-2.i [2021-08-30 17:34:17,775 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 17:34:17,775 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-08-30 17:34:17,819 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 17:34:17,826 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-30 17:34:17,826 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-08-30 17:34:17,839 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 25 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 17:34:17,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 17:34:17,847 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:34:17,847 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:34:17,847 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 6 more)] === [2021-08-30 17:34:17,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:34:17,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1511250447, now seen corresponding path program 1 times [2021-08-30 17:34:17,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:34:17,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454572730] [2021-08-30 17:34:17,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:34:17,863 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:34:17,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:34:17,869 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:34:17,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-30 17:34:18,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:34:18,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-30 17:34:18,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:34:18,152 INFO L354 Elim1Store]: treesize reduction 13, result has 35.0 percent of original size [2021-08-30 17:34:18,153 INFO L388 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 1 case distinctions, treesize of input 9 treesize of output 13 [2021-08-30 17:34:18,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:34:18,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:34:18,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:34:18,238 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:34:18,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454572730] [2021-08-30 17:34:18,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454572730] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:34:18,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:34:18,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-30 17:34:18,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074507207] [2021-08-30 17:34:18,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 17:34:18,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:34:18,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 17:34:18,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:34:18,266 INFO L87 Difference]: Start difference. First operand has 30 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 25 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:18,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:34:18,343 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2021-08-30 17:34:18,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 17:34:18,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-30 17:34:18,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:34:18,351 INFO L225 Difference]: With dead ends: 25 [2021-08-30 17:34:18,351 INFO L226 Difference]: Without dead ends: 22 [2021-08-30 17:34:18,352 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.11ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:34:18,355 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.84ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.91ms IncrementalHoareTripleChecker+Time [2021-08-30 17:34:18,355 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 8 Invalid, 32 Unknown, 0 Unchecked, 0.84ms Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 63.91ms Time] [2021-08-30 17:34:18,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-08-30 17:34:18,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-08-30 17:34:18,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 18 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:18,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-08-30 17:34:18,379 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 7 [2021-08-30 17:34:18,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:34:18,380 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-08-30 17:34:18,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:18,380 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-08-30 17:34:18,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 17:34:18,384 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:34:18,385 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:34:18,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-30 17:34:18,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:34:18,595 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 6 more)] === [2021-08-30 17:34:18,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:34:18,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1511250448, now seen corresponding path program 1 times [2021-08-30 17:34:18,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:34:18,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1014967042] [2021-08-30 17:34:18,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:34:18,597 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:34:18,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:34:18,598 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:34:18,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-30 17:34:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:34:18,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 17:34:18,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:34:18,749 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 17:34:18,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2021-08-30 17:34:18,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-08-30 17:34:18,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:34:18,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:34:18,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:34:18,864 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:34:18,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1014967042] [2021-08-30 17:34:18,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1014967042] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:34:18,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:34:18,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-08-30 17:34:18,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302802377] [2021-08-30 17:34:18,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 17:34:18,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:34:18,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 17:34:18,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-30 17:34:18,867 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:18,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:34:18,980 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-08-30 17:34:18,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 17:34:18,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-30 17:34:18,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:34:18,982 INFO L225 Difference]: With dead ends: 21 [2021-08-30 17:34:18,982 INFO L226 Difference]: Without dead ends: 21 [2021-08-30 17:34:18,982 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.74ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-30 17:34:18,983 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.41ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 108.13ms IncrementalHoareTripleChecker+Time [2021-08-30 17:34:18,983 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 36 Unknown, 0 Unchecked, 0.41ms Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 1 Unchecked, 108.13ms Time] [2021-08-30 17:34:18,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-08-30 17:34:18,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-08-30 17:34:18,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 17 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:18,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-08-30 17:34:18,986 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 7 [2021-08-30 17:34:18,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:34:18,987 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-08-30 17:34:18,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:18,987 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-08-30 17:34:18,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-30 17:34:18,987 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:34:18,987 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:34:19,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-30 17:34:19,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:34:19,200 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 6 more)] === [2021-08-30 17:34:19,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:34:19,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1814881086, now seen corresponding path program 1 times [2021-08-30 17:34:19,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:34:19,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764156855] [2021-08-30 17:34:19,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:34:19,201 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:34:19,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:34:19,203 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:34:19,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-30 17:34:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:34:19,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 17:34:19,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:34:19,424 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 17:34:19,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2021-08-30 17:34:19,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-08-30 17:34:19,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:34:19,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:34:19,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:34:19,606 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:34:19,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1764156855] [2021-08-30 17:34:19,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1764156855] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:34:19,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:34:19,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-08-30 17:34:19,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610043410] [2021-08-30 17:34:19,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 17:34:19,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:34:19,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 17:34:19,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-30 17:34:19,608 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:19,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:34:19,642 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-08-30 17:34:19,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 17:34:19,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-08-30 17:34:19,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:34:19,643 INFO L225 Difference]: With dead ends: 20 [2021-08-30 17:34:19,643 INFO L226 Difference]: Without dead ends: 20 [2021-08-30 17:34:19,643 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.49ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-30 17:34:19,644 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.48ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 30.97ms IncrementalHoareTripleChecker+Time [2021-08-30 17:34:19,645 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 30 Unknown, 0 Unchecked, 0.48ms Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 17 Unchecked, 30.97ms Time] [2021-08-30 17:34:19,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-08-30 17:34:19,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-08-30 17:34:19,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 16 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:19,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-08-30 17:34:19,648 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2021-08-30 17:34:19,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:34:19,648 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-08-30 17:34:19,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:19,648 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-08-30 17:34:19,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-30 17:34:19,649 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:34:19,649 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:34:19,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-30 17:34:19,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:34:19,858 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 6 more)] === [2021-08-30 17:34:19,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:34:19,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1814880926, now seen corresponding path program 1 times [2021-08-30 17:34:19,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:34:19,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1439771166] [2021-08-30 17:34:19,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:34:19,859 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:34:19,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:34:19,860 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:34:19,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-30 17:34:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:34:19,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 17:34:19,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:34:20,000 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 17:34:20,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2021-08-30 17:34:20,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2021-08-30 17:34:20,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:34:20,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:34:20,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:34:20,136 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:34:20,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1439771166] [2021-08-30 17:34:20,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1439771166] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:34:20,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:34:20,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-08-30 17:34:20,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133876849] [2021-08-30 17:34:20,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 17:34:20,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:34:20,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 17:34:20,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-30 17:34:20,138 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:20,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:34:20,187 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-08-30 17:34:20,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 17:34:20,187 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-08-30 17:34:20,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:34:20,188 INFO L225 Difference]: With dead ends: 19 [2021-08-30 17:34:20,188 INFO L226 Difference]: Without dead ends: 19 [2021-08-30 17:34:20,188 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.27ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-30 17:34:20,189 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.33ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 46.39ms IncrementalHoareTripleChecker+Time [2021-08-30 17:34:20,189 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 28 Unknown, 0 Unchecked, 0.33ms Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 16 Unchecked, 46.39ms Time] [2021-08-30 17:34:20,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-08-30 17:34:20,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-08-30 17:34:20,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:20,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-08-30 17:34:20,192 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 10 [2021-08-30 17:34:20,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:34:20,193 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-08-30 17:34:20,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:20,193 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-08-30 17:34:20,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-30 17:34:20,193 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:34:20,194 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:34:20,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-30 17:34:20,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:34:20,403 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr7REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 6 more)] === [2021-08-30 17:34:20,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:34:20,403 INFO L82 PathProgramCache]: Analyzing trace with hash 426738812, now seen corresponding path program 1 times [2021-08-30 17:34:20,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:34:20,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [194363075] [2021-08-30 17:34:20,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:34:20,403 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:34:20,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:34:20,404 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:34:20,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-30 17:34:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:34:20,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-30 17:34:20,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:34:20,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:34:20,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:34:20,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-08-30 17:34:20,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:34:20,617 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:34:20,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [194363075] [2021-08-30 17:34:20,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [194363075] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:34:20,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:34:20,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-08-30 17:34:20,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203663711] [2021-08-30 17:34:20,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 17:34:20,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:34:20,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 17:34:20,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:34:20,619 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:20,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:34:20,680 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-08-30 17:34:20,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 17:34:20,681 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-08-30 17:34:20,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:34:20,681 INFO L225 Difference]: With dead ends: 17 [2021-08-30 17:34:20,681 INFO L226 Difference]: Without dead ends: 17 [2021-08-30 17:34:20,682 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 33.08ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:34:20,682 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 10 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.66ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.74ms IncrementalHoareTripleChecker+Time [2021-08-30 17:34:20,683 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 15 Invalid, 33 Unknown, 0 Unchecked, 0.66ms Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 57.74ms Time] [2021-08-30 17:34:20,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-08-30 17:34:20,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-08-30 17:34:20,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:20,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-08-30 17:34:20,686 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 11 [2021-08-30 17:34:20,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:34:20,686 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-08-30 17:34:20,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:20,686 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-08-30 17:34:20,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-30 17:34:20,687 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:34:20,687 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:34:20,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-30 17:34:20,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:34:20,896 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr10ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 6 more)] === [2021-08-30 17:34:20,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:34:20,897 INFO L82 PathProgramCache]: Analyzing trace with hash -127243832, now seen corresponding path program 1 times [2021-08-30 17:34:20,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:34:20,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134310088] [2021-08-30 17:34:20,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:34:20,897 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:34:20,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:34:20,898 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:34:20,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-30 17:34:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 17:34:21,015 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-30 17:34:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 17:34:21,091 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-30 17:34:21,092 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-30 17:34:21,093 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr10ENSURES_VIOLATIONMEMORY_LEAK (10 of 11 remaining) [2021-08-30 17:34:21,094 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (9 of 11 remaining) [2021-08-30 17:34:21,094 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (8 of 11 remaining) [2021-08-30 17:34:21,094 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION (7 of 11 remaining) [2021-08-30 17:34:21,095 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (6 of 11 remaining) [2021-08-30 17:34:21,095 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION (5 of 11 remaining) [2021-08-30 17:34:21,095 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION (4 of 11 remaining) [2021-08-30 17:34:21,095 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION (3 of 11 remaining) [2021-08-30 17:34:21,095 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION (2 of 11 remaining) [2021-08-30 17:34:21,095 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION (1 of 11 remaining) [2021-08-30 17:34:21,095 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION (0 of 11 remaining) [2021-08-30 17:34:21,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-08-30 17:34:21,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:34:21,301 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 17:34:21,309 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-30 17:34:21,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:34:21 BoogieIcfgContainer [2021-08-30 17:34:21,317 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 17:34:21,317 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 17:34:21,318 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 17:34:21,318 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 17:34:21,318 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:34:17" (3/4) ... [2021-08-30 17:34:21,320 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-30 17:34:21,320 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 17:34:21,321 INFO L158 Benchmark]: Toolchain (without parser) took 4548.24ms. Allocated memory was 52.4MB in the beginning and 75.5MB in the end (delta: 23.1MB). Free memory was 28.2MB in the beginning and 31.0MB in the end (delta: -2.8MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2021-08-30 17:34:21,321 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 52.4MB. Free memory is still 34.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:34:21,321 INFO L158 Benchmark]: CACSL2BoogieTranslator took 376.47ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 28.0MB in the beginning and 39.2MB in the end (delta: -11.1MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2021-08-30 17:34:21,322 INFO L158 Benchmark]: Boogie Preprocessor took 84.35ms. Allocated memory is still 62.9MB. Free memory was 39.2MB in the beginning and 36.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 17:34:21,322 INFO L158 Benchmark]: RCFGBuilder took 516.98ms. Allocated memory is still 62.9MB. Free memory was 36.5MB in the beginning and 29.7MB in the end (delta: 6.8MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2021-08-30 17:34:21,322 INFO L158 Benchmark]: TraceAbstraction took 3556.10ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 42.3MB in the beginning and 31.5MB in the end (delta: 10.8MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2021-08-30 17:34:21,323 INFO L158 Benchmark]: Witness Printer took 2.97ms. Allocated memory is still 75.5MB. Free memory was 31.5MB in the beginning and 31.0MB in the end (delta: 504.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:34:21,324 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 52.4MB. Free memory is still 34.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 376.47ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 28.0MB in the beginning and 39.2MB in the end (delta: -11.1MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.35ms. Allocated memory is still 62.9MB. Free memory was 39.2MB in the beginning and 36.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 516.98ms. Allocated memory is still 62.9MB. Free memory was 36.5MB in the beginning and 29.7MB in the end (delta: 6.8MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. * TraceAbstraction took 3556.10ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 42.3MB in the beginning and 31.5MB in the end (delta: 10.8MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. * Witness Printer took 2.97ms. Allocated memory is still 75.5MB. Free memory was 31.5MB in the beginning and 31.0MB in the end (delta: 504.9kB). There was no memory consumed. Max. memory is 16.1GB. * 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: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 524]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 524. Possible FailurePath: [L526-L533] union { void *p0; struct { char c[2]; int p1; int p2; } str; } data; [L534] data.p0 = malloc(37U) VAL [data={15:0}, malloc(37U)={1:0}] [L535] COND FALSE !(__VERIFIER_nondet_int()) [L538] data.str.p2 = 30 VAL [data={15:0}] [L540] EXPR data.str.p2 VAL [data={15:0}, data.str.p2=30] [L540] COND FALSE !(25 > data.str.p2) [L543] return 0; [L543] return 0; VAL [\result=0] - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 54 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 3482.70ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 17.12ms, AutomataDifference: 384.48ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 9.41ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 25 SdHoareTripleChecker+Valid, 307.14ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 47 SdHoareTripleChecker+Invalid, 260.38ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 34 IncrementalHoareTripleChecker+Unchecked, 58 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 119 IncrementalHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 16 mSDtfsCounter, 119 mSolverCounterSat, 2.72ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 123.68ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 22.46ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 53.73ms SsaConstructionTime, 166.13ms SatisfiabilityAnalysisTime, 871.01ms InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 80 ConstructedInterpolants, 9 QuantifiedInterpolants, 398 SizeOfPredicates, 13 NumberOfNonLiveVariables, 339 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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 [2021-08-30 17:34:21,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...