./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test25-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_20ed431e-1366-43dc-ad12-3d98e264a150/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_20ed431e-1366-43dc-ad12-3d98e264a150/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_20ed431e-1366-43dc-ad12-3d98e264a150/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_20ed431e-1366-43dc-ad12-3d98e264a150/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test25-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_20ed431e-1366-43dc-ad12-3d98e264a150/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_20ed431e-1366-43dc-ad12-3d98e264a150/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 095737d8fbee9027efb54bd1ca6a270d14b06184 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 17:20:32,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 17:20:32,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 17:20:32,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 17:20:32,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 17:20:32,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 17:20:32,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 17:20:32,833 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 17:20:32,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 17:20:32,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 17:20:32,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 17:20:32,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 17:20:32,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 17:20:32,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 17:20:32,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 17:20:32,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 17:20:32,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 17:20:32,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 17:20:32,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 17:20:32,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 17:20:32,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 17:20:32,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 17:20:32,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 17:20:32,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 17:20:32,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 17:20:32,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 17:20:32,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 17:20:32,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 17:20:32,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 17:20:32,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 17:20:32,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 17:20:32,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 17:20:32,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 17:20:32,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 17:20:32,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 17:20:32,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 17:20:32,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 17:20:32,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 17:20:32,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 17:20:32,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 17:20:32,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 17:20:32,867 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_20ed431e-1366-43dc-ad12-3d98e264a150/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 17:20:32,889 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 17:20:32,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 17:20:32,890 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 17:20:32,890 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 17:20:32,891 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 17:20:32,891 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 17:20:32,891 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 17:20:32,891 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 17:20:32,891 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 17:20:32,891 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 17:20:32,892 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 17:20:32,892 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 17:20:32,892 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 17:20:32,892 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 17:20:32,892 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 17:20:32,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 17:20:32,893 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 17:20:32,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 17:20:32,894 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 17:20:32,894 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 17:20:32,894 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 17:20:32,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 17:20:32,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 17:20:32,894 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 17:20:32,895 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 17:20:32,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 17:20:32,895 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 17:20:32,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 17:20:32,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 17:20:32,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 17:20:32,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 17:20:32,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 17:20:32,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 17:20:32,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 17:20:32,896 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 17:20:32,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 17:20:32,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 17:20:32,897 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 17:20:32,897 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 17:20:32,897 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_20ed431e-1366-43dc-ad12-3d98e264a150/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_20ed431e-1366-43dc-ad12-3d98e264a150/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 095737d8fbee9027efb54bd1ca6a270d14b06184 [2020-12-09 17:20:33,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 17:20:33,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 17:20:33,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 17:20:33,106 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 17:20:33,106 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 17:20:33,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_20ed431e-1366-43dc-ad12-3d98e264a150/bin/utaipan/../../sv-benchmarks/c/ldv-regression/test25-2.c [2020-12-09 17:20:33,147 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_20ed431e-1366-43dc-ad12-3d98e264a150/bin/utaipan/data/1e2814e63/d2899b0af71941379fedd4a997c6dd74/FLAG2121b97c1 [2020-12-09 17:20:33,514 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 17:20:33,515 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_20ed431e-1366-43dc-ad12-3d98e264a150/sv-benchmarks/c/ldv-regression/test25-2.c [2020-12-09 17:20:33,519 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_20ed431e-1366-43dc-ad12-3d98e264a150/bin/utaipan/data/1e2814e63/d2899b0af71941379fedd4a997c6dd74/FLAG2121b97c1 [2020-12-09 17:20:33,530 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_20ed431e-1366-43dc-ad12-3d98e264a150/bin/utaipan/data/1e2814e63/d2899b0af71941379fedd4a997c6dd74 [2020-12-09 17:20:33,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 17:20:33,533 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 17:20:33,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 17:20:33,535 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 17:20:33,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 17:20:33,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:20:33" (1/1) ... [2020-12-09 17:20:33,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f957d87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:33, skipping insertion in model container [2020-12-09 17:20:33,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:20:33" (1/1) ... [2020-12-09 17:20:33,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 17:20:33,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 17:20:33,665 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_20ed431e-1366-43dc-ad12-3d98e264a150/sv-benchmarks/c/ldv-regression/test25-2.c[949,962] [2020-12-09 17:20:33,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 17:20:33,674 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 17:20:33,688 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_20ed431e-1366-43dc-ad12-3d98e264a150/sv-benchmarks/c/ldv-regression/test25-2.c[949,962] [2020-12-09 17:20:33,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 17:20:33,699 INFO L208 MainTranslator]: Completed translation [2020-12-09 17:20:33,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:33 WrapperNode [2020-12-09 17:20:33,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 17:20:33,700 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 17:20:33,700 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 17:20:33,700 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 17:20:33,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:33" (1/1) ... [2020-12-09 17:20:33,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:33" (1/1) ... [2020-12-09 17:20:33,726 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 17:20:33,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 17:20:33,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 17:20:33,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 17:20:33,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:33" (1/1) ... [2020-12-09 17:20:33,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:33" (1/1) ... [2020-12-09 17:20:33,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:33" (1/1) ... [2020-12-09 17:20:33,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:33" (1/1) ... [2020-12-09 17:20:33,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:33" (1/1) ... [2020-12-09 17:20:33,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:33" (1/1) ... [2020-12-09 17:20:33,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:33" (1/1) ... [2020-12-09 17:20:33,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 17:20:33,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 17:20:33,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 17:20:33,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 17:20:33,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20ed431e-1366-43dc-ad12-3d98e264a150/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 17:20:33,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-09 17:20:33,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 17:20:33,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-09 17:20:33,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 17:20:33,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 17:20:33,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 17:20:33,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 17:20:33,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 17:20:33,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 17:20:34,088 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 17:20:34,088 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 17:20:34,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:20:34 BoogieIcfgContainer [2020-12-09 17:20:34,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 17:20:34,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 17:20:34,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 17:20:34,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 17:20:34,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:20:33" (1/3) ... [2020-12-09 17:20:34,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7889a307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:20:34, skipping insertion in model container [2020-12-09 17:20:34,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:20:33" (2/3) ... [2020-12-09 17:20:34,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7889a307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:20:34, skipping insertion in model container [2020-12-09 17:20:34,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:20:34" (3/3) ... [2020-12-09 17:20:34,097 INFO L111 eAbstractionObserver]: Analyzing ICFG test25-2.c [2020-12-09 17:20:34,110 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 17:20:34,113 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 17:20:34,121 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 17:20:34,141 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 17:20:34,141 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 17:20:34,141 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 17:20:34,141 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 17:20:34,141 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 17:20:34,141 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 17:20:34,142 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 17:20:34,142 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 17:20:34,152 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-12-09 17:20:34,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 17:20:34,156 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:20:34,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:20:34,157 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:20:34,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:20:34,162 INFO L82 PathProgramCache]: Analyzing trace with hash -747951412, now seen corresponding path program 1 times [2020-12-09 17:20:34,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:20:34,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502802559] [2020-12-09 17:20:34,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:20:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:20:34,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:20:34,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502802559] [2020-12-09 17:20:34,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:20:34,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 17:20:34,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756995667] [2020-12-09 17:20:34,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 17:20:34,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:20:34,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 17:20:34,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 17:20:34,295 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2020-12-09 17:20:34,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:20:34,314 INFO L93 Difference]: Finished difference Result 25 states and 35 transitions. [2020-12-09 17:20:34,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 17:20:34,315 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-09 17:20:34,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:20:34,321 INFO L225 Difference]: With dead ends: 25 [2020-12-09 17:20:34,321 INFO L226 Difference]: Without dead ends: 11 [2020-12-09 17:20:34,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 17:20:34,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-12-09 17:20:34,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-12-09 17:20:34,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-09 17:20:34,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-12-09 17:20:34,344 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2020-12-09 17:20:34,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:20:34,345 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-12-09 17:20:34,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 17:20:34,345 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-12-09 17:20:34,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 17:20:34,345 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:20:34,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:20:34,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 17:20:34,346 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:20:34,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:20:34,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1048251717, now seen corresponding path program 1 times [2020-12-09 17:20:34,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:20:34,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396182424] [2020-12-09 17:20:34,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:20:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:20:34,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:20:34,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396182424] [2020-12-09 17:20:34,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789068333] [2020-12-09 17:20:34,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20ed431e-1366-43dc-ad12-3d98e264a150/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:20:34,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:20:34,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 17:20:34,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:20:34,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:20:34,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:20:34,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:20:34,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [179767574] [2020-12-09 17:20:34,531 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-12-09 17:20:34,531 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 17:20:34,536 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 17:20:34,541 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 17:20:34,541 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 17:20:35,557 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 17:20:35,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 17:20:35,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [3, 3, 3] total 11 [2020-12-09 17:20:35,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062408426] [2020-12-09 17:20:35,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 17:20:35,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:20:35,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 17:20:35,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-12-09 17:20:35,904 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 7 states. [2020-12-09 17:20:35,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:20:35,953 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-12-09 17:20:35,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 17:20:35,954 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-12-09 17:20:35,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:20:35,954 INFO L225 Difference]: With dead ends: 17 [2020-12-09 17:20:35,954 INFO L226 Difference]: Without dead ends: 13 [2020-12-09 17:20:35,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-12-09 17:20:35,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-09 17:20:35,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-09 17:20:35,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-09 17:20:35,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-12-09 17:20:35,958 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2020-12-09 17:20:35,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:20:35,958 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-12-09 17:20:35,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 17:20:35,958 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-12-09 17:20:35,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 17:20:35,959 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:20:35,959 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:20:36,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 17:20:36,161 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:20:36,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:20:36,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1920028576, now seen corresponding path program 1 times [2020-12-09 17:20:36,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:20:36,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749742030] [2020-12-09 17:20:36,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:20:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:20:36,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 17:20:36,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749742030] [2020-12-09 17:20:36,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126882142] [2020-12-09 17:20:36,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20ed431e-1366-43dc-ad12-3d98e264a150/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:20:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:20:36,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 17:20:36,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:20:36,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 17:20:36,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:20:36,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 17:20:36,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [679090790] [2020-12-09 17:20:36,396 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-12-09 17:20:36,396 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 17:20:36,397 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 17:20:36,397 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 17:20:36,397 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 17:20:37,226 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 17:20:37,793 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 17:20:37,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 17:20:37,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2020-12-09 17:20:37,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6065171] [2020-12-09 17:20:37,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 17:20:37,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:20:37,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 17:20:37,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-12-09 17:20:37,795 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 7 states. [2020-12-09 17:20:37,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:20:37,811 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2020-12-09 17:20:37,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 17:20:37,811 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-12-09 17:20:37,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:20:37,811 INFO L225 Difference]: With dead ends: 26 [2020-12-09 17:20:37,811 INFO L226 Difference]: Without dead ends: 16 [2020-12-09 17:20:37,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-12-09 17:20:37,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-09 17:20:37,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-09 17:20:37,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-09 17:20:37,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-12-09 17:20:37,814 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2020-12-09 17:20:37,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:20:37,815 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-12-09 17:20:37,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 17:20:37,815 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-12-09 17:20:37,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 17:20:37,815 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:20:37,815 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:20:38,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:20:38,017 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:20:38,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:20:38,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1780694411, now seen corresponding path program 2 times [2020-12-09 17:20:38,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:20:38,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369678239] [2020-12-09 17:20:38,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:20:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:20:38,115 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 17:20:38,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369678239] [2020-12-09 17:20:38,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365445456] [2020-12-09 17:20:38,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20ed431e-1366-43dc-ad12-3d98e264a150/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:20:38,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-09 17:20:38,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 17:20:38,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-09 17:20:38,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:20:38,357 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-09 17:20:38,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:20:38,503 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-09 17:20:38,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [4202142] [2020-12-09 17:20:38,506 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-12-09 17:20:38,506 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 17:20:38,506 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 17:20:38,506 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 17:20:38,506 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 17:20:39,197 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 17:20:39,874 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 17:20:39,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 17:20:39,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 20 [2020-12-09 17:20:39,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137859978] [2020-12-09 17:20:39,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-09 17:20:39,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:20:39,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-09 17:20:39,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2020-12-09 17:20:39,875 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 20 states. [2020-12-09 17:20:40,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:20:40,160 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-12-09 17:20:40,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-09 17:20:40,160 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 15 [2020-12-09 17:20:40,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:20:40,161 INFO L225 Difference]: With dead ends: 25 [2020-12-09 17:20:40,161 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 17:20:40,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=191, Invalid=1291, Unknown=0, NotChecked=0, Total=1482 [2020-12-09 17:20:40,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 17:20:40,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 17:20:40,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 17:20:40,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 17:20:40,162 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-09 17:20:40,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:20:40,162 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 17:20:40,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-09 17:20:40,162 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 17:20:40,162 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 17:20:40,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:20:40,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 17:20:40,507 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2020-12-09 17:20:40,602 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 17:20:40,603 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 50) no Hoare annotation was computed. [2020-12-09 17:20:40,603 INFO L262 CegarLoopResult]: For program point L37(lines 37 45) no Hoare annotation was computed. [2020-12-09 17:20:40,603 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 17:20:40,604 INFO L258 CegarLoopResult]: At program point L29-3(lines 29 32) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~j~0) (= |ULTIMATE.start_main_~#array~0.offset| 0) (<= ULTIMATE.start_main_~i~0 2147483647) (= |#NULL.base| 0) (<= 0 (+ ULTIMATE.start_main_~i~0 2147483648)) (<= 0 |ULTIMATE.start_main_~#cont~0.base|) (not (= |ULTIMATE.start_main_~#cont~0.base| |ULTIMATE.start_main_~#array~0.base|)) (<= 0 |#t~string4.base|) (= |ULTIMATE.start_main_~#cont~0.offset| 0) (<= 0 |#t~string6.base|) (<= 0 |#t~string5.base|) (= |#t~string5.offset| 0) (<= 0 |ULTIMATE.start_main_~#array~0.base|) (= |#NULL.offset| 0) (= |#t~string6.offset| 0) (= 0 |#t~string4.offset|) (<= 0 |#StackHeapBarrier|)) [2020-12-09 17:20:40,604 INFO L262 CegarLoopResult]: For program point L29-4(lines 23 52) no Hoare annotation was computed. [2020-12-09 17:20:40,604 INFO L262 CegarLoopResult]: For program point L42(lines 42 44) no Hoare annotation was computed. [2020-12-09 17:20:40,604 INFO L262 CegarLoopResult]: For program point L34(lines 34 46) no Hoare annotation was computed. [2020-12-09 17:20:40,604 INFO L265 CegarLoopResult]: At program point L51(lines 22 52) the Hoare annotation is: true [2020-12-09 17:20:40,604 INFO L258 CegarLoopResult]: At program point L43(lines 23 52) the Hoare annotation is: false [2020-12-09 17:20:40,604 INFO L262 CegarLoopResult]: For program point L39-1(lines 39 41) no Hoare annotation was computed. [2020-12-09 17:20:40,605 INFO L258 CegarLoopResult]: At program point L39-3(lines 39 41) the Hoare annotation is: (let ((.cse0 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0.base|) |ULTIMATE.start_main_~#cont~0.offset|))) (and (= ULTIMATE.start_main_~pa~0.base .cse0) (= (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0.base|) |ULTIMATE.start_main_~#cont~0.offset|) 4) ULTIMATE.start_main_~pa~0.offset) (not (= |ULTIMATE.start_main_~#cont~0.base| .cse0)) (< ULTIMATE.start_main_~i~0 (+ (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset) 1)) (not (= |ULTIMATE.start_main_~#cont~0.base| |ULTIMATE.start_main_~#array~0.base|)))) [2020-12-09 17:20:40,605 INFO L258 CegarLoopResult]: At program point L39-4(lines 39 41) the Hoare annotation is: (let ((.cse0 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0.base|) |ULTIMATE.start_main_~#cont~0.offset|)) (.cse1 (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0.base|) |ULTIMATE.start_main_~#cont~0.offset|) 4))) (and (= ULTIMATE.start_main_~pa~0.base .cse0) (= .cse1 ULTIMATE.start_main_~pa~0.offset) (not (= |ULTIMATE.start_main_~#cont~0.base| .cse0)) (< ULTIMATE.start_main_~i~0 (+ (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset) 1)) (not (= |ULTIMATE.start_main_~#cont~0.base| |ULTIMATE.start_main_~#array~0.base|)) (<= (select (select |#memory_int| .cse0) .cse1) ULTIMATE.start_main_~i~0))) [2020-12-09 17:20:40,622 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-09 17:20:40,623 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-12-09 17:20:40,623 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-09 17:20:40,623 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-09 17:20:40,623 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-12-09 17:20:40,624 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-09 17:20:40,624 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-12-09 17:20:40,624 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-09 17:20:40,625 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-09 17:20:40,625 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-12-09 17:20:40,625 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-09 17:20:40,626 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-12-09 17:20:40,626 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-09 17:20:40,626 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-09 17:20:40,626 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-12-09 17:20:40,627 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-09 17:20:40,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:20:40 BoogieIcfgContainer [2020-12-09 17:20:40,629 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 17:20:40,629 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 17:20:40,629 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 17:20:40,629 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 17:20:40,629 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:20:34" (3/4) ... [2020-12-09 17:20:40,631 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 17:20:40,637 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-12-09 17:20:40,637 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-09 17:20:40,638 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 17:20:40,638 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 17:20:40,662 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_20ed431e-1366-43dc-ad12-3d98e264a150/bin/utaipan/witness.graphml [2020-12-09 17:20:40,662 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 17:20:40,663 INFO L168 Benchmark]: Toolchain (without parser) took 7129.48 ms. Allocated memory was 96.5 MB in the beginning and 172.0 MB in the end (delta: 75.5 MB). Free memory was 56.3 MB in the beginning and 137.9 MB in the end (delta: -81.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 17:20:40,663 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 96.5 MB. Free memory was 72.7 MB in the beginning and 72.6 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 17:20:40,664 INFO L168 Benchmark]: CACSL2BoogieTranslator took 165.17 ms. Allocated memory is still 96.5 MB. Free memory was 56.2 MB in the beginning and 72.3 MB in the end (delta: -16.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. [2020-12-09 17:20:40,664 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.07 ms. Allocated memory is still 96.5 MB. Free memory was 72.3 MB in the beginning and 70.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 17:20:40,664 INFO L168 Benchmark]: Boogie Preprocessor took 20.11 ms. Allocated memory is still 96.5 MB. Free memory was 70.6 MB in the beginning and 69.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 17:20:40,665 INFO L168 Benchmark]: RCFGBuilder took 342.82 ms. Allocated memory is still 96.5 MB. Free memory was 69.2 MB in the beginning and 63.3 MB in the end (delta: 5.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 17:20:40,665 INFO L168 Benchmark]: TraceAbstraction took 6537.04 ms. Allocated memory was 96.5 MB in the beginning and 172.0 MB in the end (delta: 75.5 MB). Free memory was 62.9 MB in the beginning and 141.0 MB in the end (delta: -78.1 MB). Peak memory consumption was 94.8 MB. Max. memory is 16.1 GB. [2020-12-09 17:20:40,665 INFO L168 Benchmark]: Witness Printer took 33.44 ms. Allocated memory is still 172.0 MB. Free memory was 141.0 MB in the beginning and 137.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 17:20:40,667 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 96.5 MB. Free memory was 72.7 MB in the beginning and 72.6 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 165.17 ms. Allocated memory is still 96.5 MB. Free memory was 56.2 MB in the beginning and 72.3 MB in the end (delta: -16.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 26.07 ms. Allocated memory is still 96.5 MB. Free memory was 72.3 MB in the beginning and 70.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.11 ms. Allocated memory is still 96.5 MB. Free memory was 70.6 MB in the beginning and 69.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 342.82 ms. Allocated memory is still 96.5 MB. Free memory was 69.2 MB in the beginning and 63.3 MB in the end (delta: 5.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6537.04 ms. Allocated memory was 96.5 MB in the beginning and 172.0 MB in the end (delta: 75.5 MB). Free memory was 62.9 MB in the beginning and 141.0 MB in the end (delta: -78.1 MB). Peak memory consumption was 94.8 MB. Max. memory is 16.1 GB. * Witness Printer took 33.44 ms. Allocated memory is still 172.0 MB. Free memory was 141.0 MB in the beginning and 137.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (((((((((((((((0 <= j && array == 0) && i <= 2147483647) && #NULL == 0) && 0 <= i + 2147483648) && 0 <= cont) && !(cont == array)) && 0 <= "0") && cont == 0) && 0 <= "reach_error") && 0 <= "test25-2.c") && "test25-2.c" == 0) && 0 <= array) && #NULL == 0) && "reach_error" == 0) && 0 == "0") && 0 <= unknown-#StackHeapBarrier-unknown - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant [2020-12-09 17:20:40,673 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-09 17:20:40,673 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-12-09 17:20:40,674 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-09 17:20:40,674 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-09 17:20:40,674 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-12-09 17:20:40,675 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-09 17:20:40,675 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-12-09 17:20:40,675 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-09 17:20:40,676 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-09 17:20:40,676 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset Derived loop invariant: ((((pa == #memory_$Pointer$[cont][cont] && #memory_$Pointer$[cont][cont] + 4 == pa) && !(cont == #memory_$Pointer$[cont][cont])) && i < unknown-#memory_int-unknown[pa][pa] + 1) && !(cont == array)) && unknown-#memory_int-unknown[#memory_$Pointer$[cont][cont]][#memory_$Pointer$[cont][cont] + 4] <= i - InvariantResult [Line: 39]: Loop Invariant [2020-12-09 17:20:40,677 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-09 17:20:40,677 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-12-09 17:20:40,677 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-09 17:20:40,678 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-09 17:20:40,678 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-12-09 17:20:40,678 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base Derived loop invariant: (((pa == #memory_$Pointer$[cont][cont] && #memory_$Pointer$[cont][cont] + 4 == pa) && !(cont == #memory_$Pointer$[cont][cont])) && i < unknown-#memory_int-unknown[pa][pa] + 1) && !(cont == array) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.2s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 32 SDtfs, 14 SDslu, 48 SDs, 0 SdLazy, 146 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 14 NumberOfFragments, 150 HoareAnnotationTreeSize, 5 FomulaSimplifications, 297 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 158 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 82 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 6859 SizeOfPredicates, 24 NumberOfNonLiveVariables, 328 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 29/48 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: OVERALL_TIME[ms]: 1030, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 7, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 9, TOOLS_POST_TIME[ms]: 828, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 9, TOOLS_QUANTIFIERELIM_TIME[ms]: 823, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 396, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 23, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME[ms]: 0, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 138, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 10, DOMAIN_ISBOTTOM_APPLICATIONS: 7, DOMAIN_ISBOTTOM_TIME[ms]: 9, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 767, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 767, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 8, DAG_COMPRESSION_PROCESSED_NODES: 72, DAG_COMPRESSION_RETAINED_NODES: 26, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...