./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-industry-pattern/mod3.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b89ccbcc-1550-454c-95e0-d1278294b42c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b89ccbcc-1550-454c-95e0-d1278294b42c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b89ccbcc-1550-454c-95e0-d1278294b42c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b89ccbcc-1550-454c-95e0-d1278294b42c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-industry-pattern/mod3.c.v+sep-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b89ccbcc-1550-454c-95e0-d1278294b42c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b89ccbcc-1550-454c-95e0-d1278294b42c/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 aeb2c2f6d8fcd33ad55644c16c42ea82f5ce9b6c .............................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:04:10,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:04:10,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:04:10,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:04:10,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:04:10,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:04:10,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:04:10,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:04:10,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:04:10,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:04:10,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:04:10,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:04:10,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:04:10,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:04:10,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:04:10,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:04:10,773 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:04:10,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:04:10,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:04:10,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:04:10,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:04:10,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:04:10,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:04:10,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:04:10,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:04:10,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:04:10,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:04:10,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:04:10,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:04:10,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:04:10,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:04:10,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:04:10,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:04:10,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:04:10,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:04:10,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:04:10,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:04:10,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:04:10,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:04:10,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:04:10,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:04:10,811 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b89ccbcc-1550-454c-95e0-d1278294b42c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:04:10,836 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:04:10,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:04:10,837 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:04:10,837 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:04:10,838 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:04:10,838 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:04:10,838 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:04:10,838 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:04:10,838 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:04:10,839 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:04:10,839 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:04:10,839 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:04:10,839 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:04:10,840 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:04:10,840 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:04:10,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:04:10,841 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:04:10,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:04:10,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:04:10,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:04:10,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:04:10,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:04:10,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:04:10,842 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:04:10,842 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:04:10,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:04:10,843 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:04:10,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:04:10,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:04:10,843 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:04:10,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:04:10,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:04:10,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:04:10,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:04:10,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:04:10,845 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:04:10,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:04:10,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:04:10,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:04:10,845 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:04:10,846 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_b89ccbcc-1550-454c-95e0-d1278294b42c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b89ccbcc-1550-454c-95e0-d1278294b42c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aeb2c2f6d8fcd33ad55644c16c42ea82f5ce9b6c [2020-11-22 13:04:11,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:04:11,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:04:11,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:04:11,125 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:04:11,126 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:04:11,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b89ccbcc-1550-454c-95e0-d1278294b42c/bin/utaipan/../../sv-benchmarks/c/loop-industry-pattern/mod3.c.v+sep-reducer.c [2020-11-22 13:04:11,204 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b89ccbcc-1550-454c-95e0-d1278294b42c/bin/utaipan/data/56d23bd65/64231d6486954f5ba8e8ea090d7997d9/FLAGd04503ba1 [2020-11-22 13:04:11,665 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:04:11,666 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b89ccbcc-1550-454c-95e0-d1278294b42c/sv-benchmarks/c/loop-industry-pattern/mod3.c.v+sep-reducer.c [2020-11-22 13:04:11,675 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b89ccbcc-1550-454c-95e0-d1278294b42c/bin/utaipan/data/56d23bd65/64231d6486954f5ba8e8ea090d7997d9/FLAGd04503ba1 [2020-11-22 13:04:12,031 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b89ccbcc-1550-454c-95e0-d1278294b42c/bin/utaipan/data/56d23bd65/64231d6486954f5ba8e8ea090d7997d9 [2020-11-22 13:04:12,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:04:12,036 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:04:12,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:04:12,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:04:12,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:04:12,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:04:12" (1/1) ... [2020-11-22 13:04:12,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@330cd220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:12, skipping insertion in model container [2020-11-22 13:04:12,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:04:12" (1/1) ... [2020-11-22 13:04:12,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:04:12,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:04:12,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:04:12,304 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:04:12,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:04:12,363 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:04:12,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:12 WrapperNode [2020-11-22 13:04:12,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:04:12,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:04:12,375 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:04:12,375 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:04:12,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:12" (1/1) ... [2020-11-22 13:04:12,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:12" (1/1) ... [2020-11-22 13:04:12,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:04:12,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:04:12,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:04:12,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:04:12,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:12" (1/1) ... [2020-11-22 13:04:12,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:12" (1/1) ... [2020-11-22 13:04:12,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:12" (1/1) ... [2020-11-22 13:04:12,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:12" (1/1) ... [2020-11-22 13:04:12,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:12" (1/1) ... [2020-11-22 13:04:12,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:12" (1/1) ... [2020-11-22 13:04:12,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:12" (1/1) ... [2020-11-22 13:04:12,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:04:12,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:04:12,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:04:12,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:04:12,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b89ccbcc-1550-454c-95e0-d1278294b42c/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 [2020-11-22 13:04:12,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:04:12,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:04:12,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:04:12,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:04:12,877 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:04:12,878 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-22 13:04:12,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:04:12 BoogieIcfgContainer [2020-11-22 13:04:12,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:04:12,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:04:12,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:04:12,899 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:04:12,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:04:12" (1/3) ... [2020-11-22 13:04:12,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c65c7fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:04:12, skipping insertion in model container [2020-11-22 13:04:12,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:12" (2/3) ... [2020-11-22 13:04:12,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c65c7fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:04:12, skipping insertion in model container [2020-11-22 13:04:12,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:04:12" (3/3) ... [2020-11-22 13:04:12,903 INFO L111 eAbstractionObserver]: Analyzing ICFG mod3.c.v+sep-reducer.c [2020-11-22 13:04:12,913 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:04:12,933 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:04:12,952 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:04:12,976 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:04:12,976 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:04:12,977 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:04:12,977 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:04:12,977 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:04:12,977 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:04:12,977 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:04:12,977 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:04:12,991 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-11-22 13:04:12,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 13:04:12,996 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:04:12,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:04:12,997 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:04:13,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:04:13,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1933336948, now seen corresponding path program 1 times [2020-11-22 13:04:13,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:04:13,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207656557] [2020-11-22 13:04:13,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:04:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:04:13,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:04:13,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207656557] [2020-11-22 13:04:13,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:04:13,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:04:13,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790145487] [2020-11-22 13:04:13,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:04:13,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:04:13,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:04:13,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:04:13,503 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 4 states. [2020-11-22 13:04:24,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:04:24,099 INFO L93 Difference]: Finished difference Result 55 states and 76 transitions. [2020-11-22 13:04:24,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:04:24,102 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-22 13:04:24,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:04:24,123 INFO L225 Difference]: With dead ends: 55 [2020-11-22 13:04:24,123 INFO L226 Difference]: Without dead ends: 25 [2020-11-22 13:04:24,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:04:24,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-22 13:04:24,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-11-22 13:04:24,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-22 13:04:24,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2020-11-22 13:04:24,166 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 10 [2020-11-22 13:04:24,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:04:24,167 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2020-11-22 13:04:24,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:04:24,167 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2020-11-22 13:04:24,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 13:04:24,168 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:04:24,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:04:24,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:04:24,169 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:04:24,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:04:24,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1355866348, now seen corresponding path program 1 times [2020-11-22 13:04:24,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:04:24,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011257695] [2020-11-22 13:04:24,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:04:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:04:24,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:04:24,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011257695] [2020-11-22 13:04:24,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:04:24,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:04:24,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450349612] [2020-11-22 13:04:24,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:04:24,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:04:24,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:04:24,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:04:24,416 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand 4 states. [2020-11-22 13:04:28,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:04:28,785 INFO L93 Difference]: Finished difference Result 45 states and 59 transitions. [2020-11-22 13:04:28,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:04:28,786 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-22 13:04:28,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:04:28,786 INFO L225 Difference]: With dead ends: 45 [2020-11-22 13:04:28,786 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:04:28,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:04:28,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:04:28,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:04:28,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:04:28,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:04:28,788 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-11-22 13:04:28,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:04:28,788 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:04:28,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:04:28,788 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:04:28,789 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:04:28,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:04:28,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:04:28,852 INFO L274 CegarLoopResult]: For program point L56(lines 56 83) no Hoare annotation was computed. [2020-11-22 13:04:28,853 INFO L270 CegarLoopResult]: At program point L52(lines 24 141) the Hoare annotation is: (<= ULTIMATE.start_main_~main__x~0 (let ((.cse2 (div ULTIMATE.start_main_~main__x~0 4294967296))) (let ((.cse0 (* .cse2 (- 4294967296)))) (let ((.cse1 (div (+ ULTIMATE.start_main_~main__x~0 .cse0) 3))) (+ (* 4294967296 (div (+ ULTIMATE.start_main_~main__x~0 .cse0 (* .cse1 (- 3))) 4294967296)) (* 4294967296 .cse2) (* 3 .cse1)))))) [2020-11-22 13:04:28,853 INFO L277 CegarLoopResult]: At program point L135(lines 35 140) the Hoare annotation is: true [2020-11-22 13:04:28,853 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:04:28,853 INFO L270 CegarLoopResult]: At program point L61(lines 36 112) the Hoare annotation is: (<= ULTIMATE.start_main_~main__x~0 (let ((.cse2 (div ULTIMATE.start_main_~main__x~0 4294967296))) (let ((.cse0 (* .cse2 (- 4294967296)))) (let ((.cse1 (div (+ ULTIMATE.start_main_~main__x~0 .cse0) 3))) (+ (* 4294967296 (div (+ ULTIMATE.start_main_~main__x~0 .cse0 (* .cse1 (- 3))) 4294967296)) (* 4294967296 .cse2) (* 3 .cse1)))))) [2020-11-22 13:04:28,853 INFO L277 CegarLoopResult]: At program point L123(lines 35 140) the Hoare annotation is: true [2020-11-22 13:04:28,853 INFO L274 CegarLoopResult]: For program point L24(lines 24 141) no Hoare annotation was computed. [2020-11-22 13:04:28,854 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 13:04:28,854 INFO L274 CegarLoopResult]: For program point L45(lines 45 111) no Hoare annotation was computed. [2020-11-22 13:04:28,854 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-11-22 13:04:28,854 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:04:28,854 INFO L274 CegarLoopResult]: For program point L95(lines 95 104) no Hoare annotation was computed. [2020-11-22 13:04:28,854 INFO L277 CegarLoopResult]: At program point L145(lines 15 147) the Hoare annotation is: true [2020-11-22 13:04:28,855 INFO L270 CegarLoopResult]: At program point L42(lines 24 141) the Hoare annotation is: (<= ULTIMATE.start_main_~main__x~0 (let ((.cse2 (div ULTIMATE.start_main_~main__x~0 4294967296))) (let ((.cse0 (* .cse2 (- 4294967296)))) (let ((.cse1 (div (+ ULTIMATE.start_main_~main__x~0 .cse0) 3))) (+ (* 4294967296 (div (+ ULTIMATE.start_main_~main__x~0 .cse0 (* .cse1 (- 3))) 4294967296)) (* 4294967296 .cse2) (* 3 .cse1)))))) [2020-11-22 13:04:28,855 INFO L274 CegarLoopResult]: For program point L67(lines 67 82) no Hoare annotation was computed. [2020-11-22 13:04:28,855 INFO L274 CegarLoopResult]: For program point L88(lines 88 110) no Hoare annotation was computed. [2020-11-22 13:04:28,855 INFO L274 CegarLoopResult]: For program point L22(lines 22 146) no Hoare annotation was computed. [2020-11-22 13:04:28,855 INFO L274 CegarLoopResult]: For program point L117(lines 117 139) no Hoare annotation was computed. [2020-11-22 13:04:28,855 INFO L274 CegarLoopResult]: For program point L47(lines 47 84) no Hoare annotation was computed. [2020-11-22 13:04:28,855 INFO L277 CegarLoopResult]: At program point L138(lines 16 147) the Hoare annotation is: true [2020-11-22 13:04:28,855 INFO L274 CegarLoopResult]: For program point L35(lines 35 140) no Hoare annotation was computed. [2020-11-22 13:04:28,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:04:28 BoogieIcfgContainer [2020-11-22 13:04:28,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:04:28,893 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:04:28,894 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:04:28,894 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:04:28,894 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:04:12" (3/4) ... [2020-11-22 13:04:28,897 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:04:28,914 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-22 13:04:28,914 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-22 13:04:28,915 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:04:28,915 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:04:28,996 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b89ccbcc-1550-454c-95e0-d1278294b42c/bin/utaipan/witness.graphml [2020-11-22 13:04:28,996 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:04:28,998 INFO L168 Benchmark]: Toolchain (without parser) took 16961.45 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 61.0 MB in the beginning and 83.6 MB in the end (delta: -22.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:04:28,999 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory was 52.6 MB in the beginning and 52.5 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:04:29,000 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.71 ms. Allocated memory is still 92.3 MB. Free memory was 60.8 MB in the beginning and 69.4 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:04:29,000 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.37 ms. Allocated memory is still 92.3 MB. Free memory was 69.4 MB in the beginning and 67.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:04:29,001 INFO L168 Benchmark]: Boogie Preprocessor took 22.70 ms. Allocated memory is still 92.3 MB. Free memory was 67.7 MB in the beginning and 66.8 MB in the end (delta: 877.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:04:29,001 INFO L168 Benchmark]: RCFGBuilder took 429.45 ms. Allocated memory is still 92.3 MB. Free memory was 66.8 MB in the beginning and 49.2 MB in the end (delta: 17.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:04:29,003 INFO L168 Benchmark]: TraceAbstraction took 16011.42 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 48.8 MB in the beginning and 87.1 MB in the end (delta: -38.3 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:04:29,004 INFO L168 Benchmark]: Witness Printer took 102.68 ms. Allocated memory is still 111.1 MB. Free memory was 87.1 MB in the beginning and 83.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:04:29,009 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory was 52.6 MB in the beginning and 52.5 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 330.71 ms. Allocated memory is still 92.3 MB. Free memory was 60.8 MB in the beginning and 69.4 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.37 ms. Allocated memory is still 92.3 MB. Free memory was 69.4 MB in the beginning and 67.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.70 ms. Allocated memory is still 92.3 MB. Free memory was 67.7 MB in the beginning and 66.8 MB in the end (delta: 877.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 429.45 ms. Allocated memory is still 92.3 MB. Free memory was 66.8 MB in the beginning and 49.2 MB in the end (delta: 17.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 16011.42 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 48.8 MB in the beginning and 87.1 MB in the end (delta: -38.3 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. * Witness Printer took 102.68 ms. Allocated memory is still 111.1 MB. Free memory was 87.1 MB in the beginning and 83.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: main__x <= 4294967296 * ((main__x + main__x / 4294967296 * -4294967296 + (main__x + main__x / 4294967296 * -4294967296) / 3 * -3) / 4294967296) + 4294967296 * (main__x / 4294967296) + 3 * ((main__x + main__x / 4294967296 * -4294967296) / 3) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: main__x <= 4294967296 * ((main__x + main__x / 4294967296 * -4294967296 + (main__x + main__x / 4294967296 * -4294967296) / 3 * -3) / 4294967296) + 4294967296 * (main__x / 4294967296) + 3 * ((main__x + main__x / 4294967296 * -4294967296) / 3) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: main__x <= 4294967296 * ((main__x + main__x / 4294967296 * -4294967296 + (main__x + main__x / 4294967296 * -4294967296) / 3 * -3) / 4294967296) + 4294967296 * (main__x / 4294967296) + 3 * ((main__x + main__x / 4294967296 * -4294967296) / 3) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 15.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 15.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 47 SDtfs, 14 SDslu, 66 SDs, 0 SdLazy, 41 SolverSat, 5 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 14.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=1, 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, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 17 NumberOfFragments, 127 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 3278 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 proved your program to be correct! Received shutdown request...