./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f2a30006-308e-43bf-9525-263b0b7fac9f/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f2a30006-308e-43bf-9525-263b0b7fac9f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f2a30006-308e-43bf-9525-263b0b7fac9f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f2a30006-308e-43bf-9525-263b0b7fac9f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f2a30006-308e-43bf-9525-263b0b7fac9f/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f2a30006-308e-43bf-9525-263b0b7fac9f/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 943a72d31eebdcd925e39756b65615d2a6fd2676 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:49:41,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:49:41,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:49:41,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:49:41,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:49:41,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:49:41,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:49:41,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:49:41,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:49:41,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:49:41,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:49:41,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:49:41,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:49:41,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:49:41,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:49:41,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:49:41,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:49:41,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:49:41,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:49:41,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:49:41,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:49:41,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:49:41,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:49:41,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:49:41,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:49:41,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:49:41,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:49:41,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:49:41,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:49:41,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:49:41,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:49:41,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:49:41,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:49:41,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:49:41,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:49:41,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:49:41,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:49:41,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:49:41,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:49:41,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:49:41,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:49:41,391 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f2a30006-308e-43bf-9525-263b0b7fac9f/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-11-30 01:49:41,416 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:49:41,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:49:41,417 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:49:41,418 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:49:41,418 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:49:41,418 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:49:41,419 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 01:49:41,419 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:49:41,419 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:49:41,420 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 01:49:41,420 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 01:49:41,421 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:49:41,421 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 01:49:41,421 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 01:49:41,422 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 01:49:41,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:49:41,423 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:49:41,424 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:49:41,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:49:41,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:49:41,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:49:41,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:49:41,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:49:41,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:49:41,426 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-30 01:49:41,426 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:49:41,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:49:41,427 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:49:41,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:49:41,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:49:41,428 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:49:41,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:49:41,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:49:41,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:49:41,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:49:41,429 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:49:41,429 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 01:49:41,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:49:41,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:49:41,430 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:49:41,431 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:49:41,431 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_f2a30006-308e-43bf-9525-263b0b7fac9f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f2a30006-308e-43bf-9525-263b0b7fac9f/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 943a72d31eebdcd925e39756b65615d2a6fd2676 [2020-11-30 01:49:41,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:49:41,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:49:41,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:49:41,779 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:49:41,780 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:49:41,781 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f2a30006-308e-43bf-9525-263b0b7fac9f/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i [2020-11-30 01:49:41,879 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f2a30006-308e-43bf-9525-263b0b7fac9f/bin/utaipan/data/9120078dc/bcaa3908704f4d6581f87eeee9f661ae/FLAGb711d88c6 [2020-11-30 01:49:42,409 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:49:42,410 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f2a30006-308e-43bf-9525-263b0b7fac9f/sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i [2020-11-30 01:49:42,416 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f2a30006-308e-43bf-9525-263b0b7fac9f/bin/utaipan/data/9120078dc/bcaa3908704f4d6581f87eeee9f661ae/FLAGb711d88c6 [2020-11-30 01:49:42,804 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f2a30006-308e-43bf-9525-263b0b7fac9f/bin/utaipan/data/9120078dc/bcaa3908704f4d6581f87eeee9f661ae [2020-11-30 01:49:42,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:49:42,828 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:49:42,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:49:42,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:49:42,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:49:42,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:49:42" (1/1) ... [2020-11-30 01:49:42,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f605088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:49:42, skipping insertion in model container [2020-11-30 01:49:42,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:49:42" (1/1) ... [2020-11-30 01:49:42,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:49:42,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:49:43,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:49:43,049 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:49:43,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:49:43,085 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:49:43,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:49:43 WrapperNode [2020-11-30 01:49:43,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:49:43,109 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:49:43,109 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:49:43,110 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:49:43,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:49:43" (1/1) ... [2020-11-30 01:49:43,125 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:49:43" (1/1) ... [2020-11-30 01:49:43,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:49:43,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:49:43,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:49:43,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:49:43,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:49:43" (1/1) ... [2020-11-30 01:49:43,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:49:43" (1/1) ... [2020-11-30 01:49:43,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:49:43" (1/1) ... [2020-11-30 01:49:43,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:49:43" (1/1) ... [2020-11-30 01:49:43,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:49:43" (1/1) ... [2020-11-30 01:49:43,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:49:43" (1/1) ... [2020-11-30 01:49:43,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:49:43" (1/1) ... [2020-11-30 01:49:43,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:49:43,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:49:43,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:49:43,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:49:43,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:49:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f2a30006-308e-43bf-9525-263b0b7fac9f/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 01:49:43,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:49:43,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:49:43,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:49:43,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:49:43,713 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:49:43,713 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 01:49:43,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:49:43 BoogieIcfgContainer [2020-11-30 01:49:43,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:49:43,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:49:43,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:49:43,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:49:43,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:49:42" (1/3) ... [2020-11-30 01:49:43,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0e2b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:49:43, skipping insertion in model container [2020-11-30 01:49:43,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:49:43" (2/3) ... [2020-11-30 01:49:43,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0e2b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:49:43, skipping insertion in model container [2020-11-30 01:49:43,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:49:43" (3/3) ... [2020-11-30 01:49:43,729 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark01_conjunctive.i [2020-11-30 01:49:43,749 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:49:43,755 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 01:49:43,767 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 01:49:43,800 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:49:43,801 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:49:43,801 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:49:43,801 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:49:43,801 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:49:43,802 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:49:43,802 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:49:43,802 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:49:43,820 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-11-30 01:49:43,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 01:49:43,826 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:43,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 01:49:43,829 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:49:43,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:43,837 INFO L82 PathProgramCache]: Analyzing trace with hash 2152192, now seen corresponding path program 1 times [2020-11-30 01:49:43,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:43,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820235836] [2020-11-30 01:49:43,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:44,080 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 01:49:44,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820235836] [2020-11-30 01:49:44,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:49:44,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:49:44,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436386685] [2020-11-30 01:49:44,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:49:44,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:44,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:49:44,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:49:44,120 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-11-30 01:49:44,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:44,201 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-11-30 01:49:44,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:49:44,206 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-30 01:49:44,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:44,219 INFO L225 Difference]: With dead ends: 15 [2020-11-30 01:49:44,231 INFO L226 Difference]: Without dead ends: 10 [2020-11-30 01:49:44,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:49:44,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-30 01:49:44,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-11-30 01:49:44,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-30 01:49:44,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-30 01:49:44,283 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 4 [2020-11-30 01:49:44,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:44,284 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-30 01:49:44,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:49:44,286 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-30 01:49:44,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 01:49:44,286 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:44,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 01:49:44,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:49:44,287 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:49:44,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:44,289 INFO L82 PathProgramCache]: Analyzing trace with hash 66718002, now seen corresponding path program 1 times [2020-11-30 01:49:44,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:44,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950928707] [2020-11-30 01:49:44,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:44,348 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 01:49:44,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950928707] [2020-11-30 01:49:44,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:49:44,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:49:44,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486566147] [2020-11-30 01:49:44,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:49:44,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:44,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:49:44,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:49:44,351 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 3 states. [2020-11-30 01:49:44,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:44,367 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2020-11-30 01:49:44,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:49:44,368 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-30 01:49:44,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:44,369 INFO L225 Difference]: With dead ends: 9 [2020-11-30 01:49:44,369 INFO L226 Difference]: Without dead ends: 8 [2020-11-30 01:49:44,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:49:44,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-30 01:49:44,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-30 01:49:44,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-30 01:49:44,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-30 01:49:44,373 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2020-11-30 01:49:44,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:44,373 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-11-30 01:49:44,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:49:44,374 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-30 01:49:44,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 01:49:44,374 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:44,374 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2020-11-30 01:49:44,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:49:44,375 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:49:44,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:44,376 INFO L82 PathProgramCache]: Analyzing trace with hash -308508044, now seen corresponding path program 1 times [2020-11-30 01:49:44,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:44,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863033992] [2020-11-30 01:49:44,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:44,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:44,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863033992] [2020-11-30 01:49:44,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683350915] [2020-11-30 01:49:44,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f2a30006-308e-43bf-9525-263b0b7fac9f/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 01:49:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:44,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:49:44,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:49:44,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:44,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:49:44,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:44,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2034277953] [2020-11-30 01:49:44,695 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-11-30 01:49:44,696 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:49:44,703 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:49:44,711 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:49:44,712 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:49:45,349 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:49:45,585 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-11-30 01:49:45,969 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2020-11-30 01:49:46,164 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:49:46,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:49:46,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2020-11-30 01:49:46,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224510726] [2020-11-30 01:49:46,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 01:49:46,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:46,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 01:49:46,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-11-30 01:49:46,167 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 8 states. [2020-11-30 01:49:46,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:46,240 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2020-11-30 01:49:46,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:49:46,241 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2020-11-30 01:49:46,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:46,242 INFO L225 Difference]: With dead ends: 18 [2020-11-30 01:49:46,242 INFO L226 Difference]: Without dead ends: 17 [2020-11-30 01:49:46,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-11-30 01:49:46,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-30 01:49:46,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-30 01:49:46,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-30 01:49:46,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-11-30 01:49:46,247 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 7 [2020-11-30 01:49:46,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:46,248 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-11-30 01:49:46,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 01:49:46,248 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-11-30 01:49:46,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 01:49:46,249 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:46,249 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1] [2020-11-30 01:49:46,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-30 01:49:46,450 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:49:46,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:46,451 INFO L82 PathProgramCache]: Analyzing trace with hash -854200832, now seen corresponding path program 2 times [2020-11-30 01:49:46,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:46,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506311896] [2020-11-30 01:49:46,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:46,587 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:46,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506311896] [2020-11-30 01:49:46,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604504133] [2020-11-30 01:49:46,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f2a30006-308e-43bf-9525-263b0b7fac9f/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 01:49:46,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-11-30 01:49:46,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:49:46,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:49:46,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:49:46,809 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:46,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:49:46,975 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:46,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1604188944] [2020-11-30 01:49:46,978 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-11-30 01:49:46,978 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:49:46,979 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:49:46,979 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:49:46,979 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:49:47,278 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:49:47,536 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-11-30 01:49:47,914 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2020-11-30 01:49:48,127 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:49:48,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:49:48,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2020-11-30 01:49:48,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030733820] [2020-11-30 01:49:48,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-30 01:49:48,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:48,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-30 01:49:48,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2020-11-30 01:49:48,130 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 17 states. [2020-11-30 01:49:48,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:48,250 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-11-30 01:49:48,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 01:49:48,251 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 16 [2020-11-30 01:49:48,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:48,252 INFO L225 Difference]: With dead ends: 36 [2020-11-30 01:49:48,252 INFO L226 Difference]: Without dead ends: 35 [2020-11-30 01:49:48,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=153, Invalid=353, Unknown=0, NotChecked=0, Total=506 [2020-11-30 01:49:48,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-30 01:49:48,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-30 01:49:48,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-30 01:49:48,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-11-30 01:49:48,264 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 16 [2020-11-30 01:49:48,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:48,266 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-11-30 01:49:48,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-30 01:49:48,267 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-11-30 01:49:48,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-30 01:49:48,270 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:48,271 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1] [2020-11-30 01:49:48,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:49:48,492 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:49:48,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:48,492 INFO L82 PathProgramCache]: Analyzing trace with hash -187047808, now seen corresponding path program 3 times [2020-11-30 01:49:48,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:48,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796670818] [2020-11-30 01:49:48,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:48,765 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:48,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796670818] [2020-11-30 01:49:48,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428345252] [2020-11-30 01:49:48,766 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f2a30006-308e-43bf-9525-263b0b7fac9f/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:49:48,834 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 01:49:48,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:49:48,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-30 01:49:48,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:49:49,121 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:49,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:49:49,488 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:49,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [721315054] [2020-11-30 01:49:49,494 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-11-30 01:49:49,495 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:49:49,496 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:49:49,497 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:49:49,497 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:49:49,721 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:49:49,982 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-11-30 01:49:50,344 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2020-11-30 01:49:50,572 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 25 [2020-11-30 01:49:50,574 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:49:50,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:49:50,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2020-11-30 01:49:50,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913981493] [2020-11-30 01:49:50,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-11-30 01:49:50,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:50,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-11-30 01:49:50,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=544, Invalid=1016, Unknown=0, NotChecked=0, Total=1560 [2020-11-30 01:49:50,578 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 35 states. [2020-11-30 01:49:50,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:50,815 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2020-11-30 01:49:50,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-30 01:49:50,816 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 34 [2020-11-30 01:49:50,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:50,818 INFO L225 Difference]: With dead ends: 72 [2020-11-30 01:49:50,818 INFO L226 Difference]: Without dead ends: 71 [2020-11-30 01:49:50,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=579, Invalid=1061, Unknown=0, NotChecked=0, Total=1640 [2020-11-30 01:49:50,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-11-30 01:49:50,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-11-30 01:49:50,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-11-30 01:49:50,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2020-11-30 01:49:50,846 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 34 [2020-11-30 01:49:50,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:50,847 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2020-11-30 01:49:50,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-11-30 01:49:50,848 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2020-11-30 01:49:50,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-11-30 01:49:50,850 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:50,851 INFO L422 BasicCegarLoop]: trace histogram [23, 22, 22, 1, 1, 1] [2020-11-30 01:49:51,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-11-30 01:49:51,064 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:49:51,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:51,064 INFO L82 PathProgramCache]: Analyzing trace with hash -208476800, now seen corresponding path program 4 times [2020-11-30 01:49:51,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:51,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942448971] [2020-11-30 01:49:51,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:51,758 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:51,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942448971] [2020-11-30 01:49:51,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673380211] [2020-11-30 01:49:51,760 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f2a30006-308e-43bf-9525-263b0b7fac9f/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:49:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:49:51,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 47 conjunts are in the unsatisfiable core [2020-11-30 01:49:51,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:49:53,741 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:53,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:49:54,703 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:49:54,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [917968019] [2020-11-30 01:49:54,707 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-11-30 01:49:54,707 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 01:49:54,708 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 01:49:54,708 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 01:49:54,708 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 01:49:54,932 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 01:49:55,203 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-11-30 01:49:55,595 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2020-11-30 01:49:55,761 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:49:55,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:49:55,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 70 [2020-11-30 01:49:55,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861500859] [2020-11-30 01:49:55,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-11-30 01:49:55,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:49:55,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-11-30 01:49:55,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2104, Invalid=3596, Unknown=0, NotChecked=0, Total=5700 [2020-11-30 01:49:55,768 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 71 states. [2020-11-30 01:49:56,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:49:56,149 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2020-11-30 01:49:56,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-30 01:49:56,149 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 70 [2020-11-30 01:49:56,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:49:56,151 INFO L225 Difference]: With dead ends: 96 [2020-11-30 01:49:56,151 INFO L226 Difference]: Without dead ends: 95 [2020-11-30 01:49:56,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3172 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2175, Invalid=3677, Unknown=0, NotChecked=0, Total=5852 [2020-11-30 01:49:56,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-11-30 01:49:56,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-11-30 01:49:56,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-11-30 01:49:56,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2020-11-30 01:49:56,178 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 70 [2020-11-30 01:49:56,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:49:56,180 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2020-11-30 01:49:56,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-11-30 01:49:56,181 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2020-11-30 01:49:56,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-11-30 01:49:56,186 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:49:56,186 INFO L422 BasicCegarLoop]: trace histogram [31, 30, 30, 1, 1, 1] [2020-11-30 01:49:56,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:49:56,403 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:49:56,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:49:56,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1846602880, now seen corresponding path program 5 times [2020-11-30 01:49:56,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:49:56,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710965357] [2020-11-30 01:49:56,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:49:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:49:56,460 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:49:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:49:56,518 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:49:56,552 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 01:49:56,552 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:49:56,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-11-30 01:49:56,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:49:56 BoogieIcfgContainer [2020-11-30 01:49:56,620 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:49:56,621 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:49:56,621 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:49:56,621 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:49:56,622 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:49:43" (3/4) ... [2020-11-30 01:49:56,624 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 01:49:56,730 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f2a30006-308e-43bf-9525-263b0b7fac9f/bin/utaipan/witness.graphml [2020-11-30 01:49:56,734 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:49:56,736 INFO L168 Benchmark]: Toolchain (without parser) took 13907.09 ms. Allocated memory was 86.0 MB in the beginning and 207.6 MB in the end (delta: 121.6 MB). Free memory was 54.9 MB in the beginning and 140.1 MB in the end (delta: -85.2 MB). Peak memory consumption was 35.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:49:56,736 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 86.0 MB. Free memory is still 45.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:49:56,736 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.39 ms. Allocated memory was 86.0 MB in the beginning and 117.4 MB in the end (delta: 31.5 MB). Free memory was 54.7 MB in the beginning and 95.1 MB in the end (delta: -40.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:49:56,737 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.22 ms. Allocated memory is still 117.4 MB. Free memory was 95.1 MB in the beginning and 93.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:49:56,737 INFO L168 Benchmark]: Boogie Preprocessor took 39.47 ms. Allocated memory is still 117.4 MB. Free memory was 93.8 MB in the beginning and 93.1 MB in the end (delta: 672.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:49:56,737 INFO L168 Benchmark]: RCFGBuilder took 529.86 ms. Allocated memory is still 117.4 MB. Free memory was 93.1 MB in the beginning and 77.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-30 01:49:56,738 INFO L168 Benchmark]: TraceAbstraction took 12902.60 ms. Allocated memory was 117.4 MB in the beginning and 207.6 MB in the end (delta: 90.2 MB). Free memory was 76.3 MB in the beginning and 145.4 MB in the end (delta: -69.1 MB). Peak memory consumption was 23.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:49:56,738 INFO L168 Benchmark]: Witness Printer took 113.79 ms. Allocated memory is still 207.6 MB. Free memory was 144.3 MB in the beginning and 140.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:49:56,741 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 86.0 MB. Free memory is still 45.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 276.39 ms. Allocated memory was 86.0 MB in the beginning and 117.4 MB in the end (delta: 31.5 MB). Free memory was 54.7 MB in the beginning and 95.1 MB in the end (delta: -40.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.22 ms. Allocated memory is still 117.4 MB. Free memory was 95.1 MB in the beginning and 93.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.47 ms. Allocated memory is still 117.4 MB. Free memory was 93.8 MB in the beginning and 93.1 MB in the end (delta: 672.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 529.86 ms. Allocated memory is still 117.4 MB. Free memory was 93.1 MB in the beginning and 77.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12902.60 ms. Allocated memory was 117.4 MB in the beginning and 207.6 MB in the end (delta: 90.2 MB). Free memory was 76.3 MB in the beginning and 145.4 MB in the end (delta: -69.1 MB). Peak memory consumption was 23.5 MB. Max. memory is 16.1 GB. * Witness Printer took 113.79 ms. Allocated memory is still 207.6 MB. Free memory was 144.3 MB in the beginning and 140.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 24]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int x = __VERIFIER_nondet_int(); [L21] int y = __VERIFIER_nondet_int(); [L22] COND FALSE !(!(x==1 && y==1)) [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] x+y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.7s, OverallIterations: 7, TraceHistogramMax: 31, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 96 SDslu, 97 SDs, 0 SdLazy, 228 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 426 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4141 ImplicationChecksByTransitivity, 7.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95occurred in iteration=6, 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, 6 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 357 NumberOfCodeBlocks, 357 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 376 ConstructedInterpolants, 46 QuantifiedInterpolants, 191062 SizeOfPredicates, 8 NumberOfNonLiveVariables, 399 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2760 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 incorrect! Received shutdown request...