./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound1.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_518506af-871f-4b1a-a6d7-2df10037a0a0/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_518506af-871f-4b1a-a6d7-2df10037a0a0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_518506af-871f-4b1a-a6d7-2df10037a0a0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_518506af-871f-4b1a-a6d7-2df10037a0a0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_518506af-871f-4b1a-a6d7-2df10037a0a0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_518506af-871f-4b1a-a6d7-2df10037a0a0/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 58edc92b721c1f9ebb1bf2bfb3fa6c635e179544 ........................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:06:30,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:06:30,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:06:30,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:06:30,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:06:30,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:06:30,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:06:30,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:06:30,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:06:30,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:06:30,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:06:30,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:06:30,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:06:30,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:06:30,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:06:30,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:06:30,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:06:30,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:06:30,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:06:30,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:06:30,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:06:30,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:06:30,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:06:30,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:06:30,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:06:30,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:06:30,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:06:30,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:06:30,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:06:30,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:06:30,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:06:30,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:06:30,145 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:06:30,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:06:30,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:06:30,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:06:30,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:06:30,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:06:30,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:06:30,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:06:30,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:06:30,153 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_518506af-871f-4b1a-a6d7-2df10037a0a0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:06:30,188 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:06:30,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:06:30,202 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:06:30,202 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:06:30,203 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:06:30,203 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:06:30,203 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:06:30,203 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:06:30,203 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:06:30,204 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:06:30,205 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:06:30,205 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:06:30,205 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:06:30,205 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:06:30,206 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:06:30,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:06:30,207 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:06:30,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:06:30,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:06:30,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:06:30,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:06:30,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:06:30,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:06:30,208 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:06:30,208 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:06:30,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:06:30,209 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:06:30,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:06:30,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:06:30,210 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:06:30,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:06:30,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:06:30,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:06:30,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:06:30,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:06:30,211 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:06:30,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:06:30,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:06:30,212 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:06:30,212 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:06:30,212 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_518506af-871f-4b1a-a6d7-2df10037a0a0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_518506af-871f-4b1a-a6d7-2df10037a0a0/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58edc92b721c1f9ebb1bf2bfb3fa6c635e179544 [2020-11-30 02:06:30,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:06:30,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:06:30,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:06:30,538 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:06:30,539 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:06:30,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_518506af-871f-4b1a-a6d7-2df10037a0a0/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound1.c [2020-11-30 02:06:30,637 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_518506af-871f-4b1a-a6d7-2df10037a0a0/bin/utaipan/data/5f20baf8e/b759e4b8769c48f2a8a92e2e405a29b2/FLAG5eea2f259 [2020-11-30 02:06:31,059 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:06:31,060 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_518506af-871f-4b1a-a6d7-2df10037a0a0/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound1.c [2020-11-30 02:06:31,066 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_518506af-871f-4b1a-a6d7-2df10037a0a0/bin/utaipan/data/5f20baf8e/b759e4b8769c48f2a8a92e2e405a29b2/FLAG5eea2f259 [2020-11-30 02:06:31,460 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_518506af-871f-4b1a-a6d7-2df10037a0a0/bin/utaipan/data/5f20baf8e/b759e4b8769c48f2a8a92e2e405a29b2 [2020-11-30 02:06:31,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:06:31,464 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:06:31,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:06:31,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:06:31,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:06:31,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:06:31" (1/1) ... [2020-11-30 02:06:31,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20bf90df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:31, skipping insertion in model container [2020-11-30 02:06:31,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:06:31" (1/1) ... [2020-11-30 02:06:31,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:06:31,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:06:31,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:06:31,685 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:06:31,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:06:31,714 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:06:31,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:31 WrapperNode [2020-11-30 02:06:31,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:06:31,716 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:06:31,716 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:06:31,716 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:06:31,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:31" (1/1) ... [2020-11-30 02:06:31,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:31" (1/1) ... [2020-11-30 02:06:31,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:06:31,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:06:31,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:06:31,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:06:31,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:31" (1/1) ... [2020-11-30 02:06:31,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:31" (1/1) ... [2020-11-30 02:06:31,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:31" (1/1) ... [2020-11-30 02:06:31,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:31" (1/1) ... [2020-11-30 02:06:31,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:31" (1/1) ... [2020-11-30 02:06:31,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:31" (1/1) ... [2020-11-30 02:06:31,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:31" (1/1) ... [2020-11-30 02:06:31,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:06:31,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:06:31,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:06:31,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:06:31,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_518506af-871f-4b1a-a6d7-2df10037a0a0/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 [2020-11-30 02:06:31,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:06:31,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:06:31,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:06:31,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:06:32,468 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:06:32,468 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-11-30 02:06:32,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:06:32 BoogieIcfgContainer [2020-11-30 02:06:32,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:06:32,472 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:06:32,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:06:32,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:06:32,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:06:31" (1/3) ... [2020-11-30 02:06:32,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d94888b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:06:32, skipping insertion in model container [2020-11-30 02:06:32,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:31" (2/3) ... [2020-11-30 02:06:32,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d94888b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:06:32, skipping insertion in model container [2020-11-30 02:06:32,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:06:32" (3/3) ... [2020-11-30 02:06:32,484 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2-ll_valuebound1.c [2020-11-30 02:06:32,496 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:06:32,500 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 02:06:32,516 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 02:06:32,537 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:06:32,538 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:06:32,538 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:06:32,538 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:06:32,538 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:06:32,538 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:06:32,538 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:06:32,539 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:06:32,554 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-11-30 02:06:32,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 02:06:32,560 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:06:32,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 02:06:32,565 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:06:32,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:06:32,575 INFO L82 PathProgramCache]: Analyzing trace with hash 3033814, now seen corresponding path program 1 times [2020-11-30 02:06:32,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:06:32,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979639316] [2020-11-30 02:06:32,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:06:32,675 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 02:06:32,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [818021773] [2020-11-30 02:06:32,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_518506af-871f-4b1a-a6d7-2df10037a0a0/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 [2020-11-30 02:06:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:06:32,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 02:06:32,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:06:32,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:06:32,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:06:32,880 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:06:32,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:06:32,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979639316] [2020-11-30 02:06:32,907 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:06:32,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818021773] [2020-11-30 02:06:32,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:06:32,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 02:06:32,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954442467] [2020-11-30 02:06:32,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:06:32,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:06:32,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:06:32,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:06:32,938 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 5 states. [2020-11-30 02:06:35,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:06:35,202 INFO L93 Difference]: Finished difference Result 38 states and 51 transitions. [2020-11-30 02:06:35,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:06:35,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2020-11-30 02:06:35,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:06:35,211 INFO L225 Difference]: With dead ends: 38 [2020-11-30 02:06:35,211 INFO L226 Difference]: Without dead ends: 17 [2020-11-30 02:06:35,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:06:35,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-30 02:06:35,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-11-30 02:06:35,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 02:06:35,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-30 02:06:35,261 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 4 [2020-11-30 02:06:35,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:06:35,261 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-30 02:06:35,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:06:35,262 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-30 02:06:35,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 02:06:35,262 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:06:35,262 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2020-11-30 02:06:35,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-30 02:06:35,478 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:06:35,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:06:35,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1292580502, now seen corresponding path program 1 times [2020-11-30 02:06:35,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:06:35,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357369890] [2020-11-30 02:06:35,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:06:35,505 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 02:06:35,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1829069792] [2020-11-30 02:06:35,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_518506af-871f-4b1a-a6d7-2df10037a0a0/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 [2020-11-30 02:06:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:06:35,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 02:06:35,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:06:35,652 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:06:35,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:06:35,675 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:06:35,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357369890] [2020-11-30 02:06:35,676 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:06:35,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829069792] [2020-11-30 02:06:35,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:06:35,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-30 02:06:35,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36374811] [2020-11-30 02:06:35,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:06:35,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:06:35,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:06:35,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:06:35,679 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 6 states. [2020-11-30 02:06:35,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:06:35,689 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-11-30 02:06:35,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:06:35,691 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-30 02:06:35,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:06:35,691 INFO L225 Difference]: With dead ends: 16 [2020-11-30 02:06:35,692 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:06:35,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:06:35,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:06:35,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:06:35,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:06:35,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:06:35,693 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-11-30 02:06:35,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:06:35,693 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:06:35,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:06:35,694 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:06:35,694 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:06:35,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:06:35,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:06:36,001 INFO L270 CegarLoopResult]: At program point L35-2(lines 35 44) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~z~0) (= ULTIMATE.start_main_~x~0 1) (<= 1 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~y~0 1) (<= 0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~z~0 1) (<= ULTIMATE.start_main_~k~0 1)) [2020-11-30 02:06:36,001 INFO L274 CegarLoopResult]: For program point L35-3(lines 35 44) no Hoare annotation was computed. [2020-11-30 02:06:36,001 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 02:06:36,001 INFO L274 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-11-30 02:06:36,001 INFO L270 CegarLoopResult]: At program point L15-1(lines 38 39) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~z~0) (= ULTIMATE.start_main_~x~0 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~y~0 1) (<= 0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~z~0 1) (<= ULTIMATE.start_main_~k~0 1)) [2020-11-30 02:06:36,002 INFO L274 CegarLoopResult]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2020-11-30 02:06:36,002 INFO L277 CegarLoopResult]: At program point L15-3(lines 14 20) the Hoare annotation is: true [2020-11-30 02:06:36,002 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:06:36,002 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 02:06:36,002 INFO L274 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-11-30 02:06:36,002 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-11-30 02:06:36,002 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:06:36,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:06:36 BoogieIcfgContainer [2020-11-30 02:06:36,031 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:06:36,032 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:06:36,032 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:06:36,032 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:06:36,033 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:06:32" (3/4) ... [2020-11-30 02:06:36,035 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:06:36,043 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-30 02:06:36,043 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-30 02:06:36,044 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 02:06:36,044 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:06:36,085 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_518506af-871f-4b1a-a6d7-2df10037a0a0/bin/utaipan/witness.graphml [2020-11-30 02:06:36,085 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:06:36,089 INFO L168 Benchmark]: Toolchain (without parser) took 4621.71 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 55.7 MB in the beginning and 66.4 MB in the end (delta: -10.7 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:06:36,090 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 88.1 MB. Free memory is still 44.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:06:36,090 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.80 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 55.5 MB in the beginning and 92.0 MB in the end (delta: -36.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:06:36,096 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.64 ms. Allocated memory is still 115.3 MB. Free memory was 92.0 MB in the beginning and 90.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:06:36,096 INFO L168 Benchmark]: Boogie Preprocessor took 38.34 ms. Allocated memory is still 115.3 MB. Free memory was 90.6 MB in the beginning and 89.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:06:36,097 INFO L168 Benchmark]: RCFGBuilder took 673.41 ms. Allocated memory is still 115.3 MB. Free memory was 89.3 MB in the beginning and 70.5 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:06:36,097 INFO L168 Benchmark]: TraceAbstraction took 3559.24 ms. Allocated memory is still 115.3 MB. Free memory was 70.5 MB in the beginning and 69.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:06:36,098 INFO L168 Benchmark]: Witness Printer took 53.38 ms. Allocated memory is still 115.3 MB. Free memory was 69.3 MB in the beginning and 66.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:06:36,101 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 88.1 MB. Free memory is still 44.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 245.80 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 55.5 MB in the beginning and 92.0 MB in the end (delta: -36.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.64 ms. Allocated memory is still 115.3 MB. Free memory was 92.0 MB in the beginning and 90.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.34 ms. Allocated memory is still 115.3 MB. Free memory was 90.6 MB in the beginning and 89.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 673.41 ms. Allocated memory is still 115.3 MB. Free memory was 89.3 MB in the beginning and 70.5 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3559.24 ms. Allocated memory is still 115.3 MB. Free memory was 70.5 MB in the beginning and 69.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. * Witness Printer took 53.38 ms. Allocated memory is still 115.3 MB. Free memory was 69.3 MB in the beginning and 66.4 MB in the end (delta: 2.8 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: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((0 <= z && x == 1) && 1 <= c) && y == 1) && 0 <= k) && z <= 1) && k <= 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((((0 <= z && x == 1) && 1 <= cond) && 1 <= c) && y == 1) && 0 <= k) && z <= 1) && k <= 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 2, TraceHistogramMax: 3, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 17 SDslu, 22 SDs, 0 SdLazy, 21 SolverSat, 11 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 3 LocationsWithAnnotation, 3 PreInvPairs, 8 NumberOfFragments, 48 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 906 SizeOfPredicates, 8 NumberOfNonLiveVariables, 132 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 14/14 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...