./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/lcm2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/lcm2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9d162b857a109cf07f49ff5c5c478da80317c448 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 00:07:29,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 00:07:29,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 00:07:29,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 00:07:29,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 00:07:29,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 00:07:29,879 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 00:07:29,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 00:07:29,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 00:07:29,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 00:07:29,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 00:07:29,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 00:07:29,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 00:07:29,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 00:07:29,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 00:07:29,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 00:07:29,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 00:07:29,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 00:07:29,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 00:07:29,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 00:07:29,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 00:07:29,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 00:07:29,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 00:07:29,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 00:07:29,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 00:07:29,903 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 00:07:29,903 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 00:07:29,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 00:07:29,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 00:07:29,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 00:07:29,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 00:07:29,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 00:07:29,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 00:07:29,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 00:07:29,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 00:07:29,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 00:07:29,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 00:07:29,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 00:07:29,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 00:07:29,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 00:07:29,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 00:07:29,914 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 00:07:29,928 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 00:07:29,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 00:07:29,930 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 00:07:29,930 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 00:07:29,930 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 00:07:29,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 00:07:29,931 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 00:07:29,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 00:07:29,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 00:07:29,932 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 00:07:29,932 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 00:07:29,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 00:07:29,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 00:07:29,933 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 00:07:29,933 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 00:07:29,933 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 00:07:29,933 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 00:07:29,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 00:07:29,934 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 00:07:29,934 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 00:07:29,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 00:07:29,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 00:07:29,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 00:07:29,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 00:07:29,936 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 00:07:29,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 00:07:29,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 00:07:29,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 00:07:29,937 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d162b857a109cf07f49ff5c5c478da80317c448 [2019-11-28 00:07:30,295 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 00:07:30,313 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 00:07:30,318 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 00:07:30,320 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 00:07:30,320 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 00:07:30,321 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/lcm2.c [2019-11-28 00:07:30,379 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5a36f712/b9efc799435d4c918897e79775dcc89d/FLAGe9e56c2ed [2019-11-28 00:07:30,802 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 00:07:30,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/lcm2.c [2019-11-28 00:07:30,808 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5a36f712/b9efc799435d4c918897e79775dcc89d/FLAGe9e56c2ed [2019-11-28 00:07:31,210 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5a36f712/b9efc799435d4c918897e79775dcc89d [2019-11-28 00:07:31,213 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 00:07:31,215 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 00:07:31,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 00:07:31,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 00:07:31,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 00:07:31,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:07:31" (1/1) ... [2019-11-28 00:07:31,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78418a0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:31, skipping insertion in model container [2019-11-28 00:07:31,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:07:31" (1/1) ... [2019-11-28 00:07:31,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 00:07:31,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 00:07:31,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:07:31,482 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 00:07:31,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:07:31,534 INFO L208 MainTranslator]: Completed translation [2019-11-28 00:07:31,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:31 WrapperNode [2019-11-28 00:07:31,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 00:07:31,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 00:07:31,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 00:07:31,536 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 00:07:31,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:31" (1/1) ... [2019-11-28 00:07:31,554 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:31" (1/1) ... [2019-11-28 00:07:31,632 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 00:07:31,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 00:07:31,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 00:07:31,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 00:07:31,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:31" (1/1) ... [2019-11-28 00:07:31,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:31" (1/1) ... [2019-11-28 00:07:31,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:31" (1/1) ... [2019-11-28 00:07:31,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:31" (1/1) ... [2019-11-28 00:07:31,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:31" (1/1) ... [2019-11-28 00:07:31,651 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:31" (1/1) ... [2019-11-28 00:07:31,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:31" (1/1) ... [2019-11-28 00:07:31,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 00:07:31,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 00:07:31,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 00:07:31,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 00:07:31,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 00:07:31,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 00:07:31,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 00:07:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2019-11-28 00:07:31,912 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 00:07:31,913 INFO L297 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-28 00:07:31,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:07:31 BoogieIcfgContainer [2019-11-28 00:07:31,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 00:07:31,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 00:07:31,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 00:07:31,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 00:07:31,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:07:31" (1/3) ... [2019-11-28 00:07:31,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d1e760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:07:31, skipping insertion in model container [2019-11-28 00:07:31,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:07:31" (2/3) ... [2019-11-28 00:07:31,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d1e760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:07:31, skipping insertion in model container [2019-11-28 00:07:31,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:07:31" (3/3) ... [2019-11-28 00:07:31,923 INFO L109 eAbstractionObserver]: Analyzing ICFG lcm2.c [2019-11-28 00:07:31,934 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 00:07:31,941 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-28 00:07:31,954 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-28 00:07:31,982 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 00:07:31,982 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 00:07:31,983 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 00:07:31,983 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 00:07:31,983 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 00:07:31,983 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 00:07:31,984 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 00:07:31,984 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 00:07:32,005 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-28 00:07:32,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 00:07:32,013 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:07:32,015 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 00:07:32,015 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:07:32,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:07:32,024 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-28 00:07:32,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:07:32,043 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804543276] [2019-11-28 00:07:32,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:07:32,151 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 00:07:32,152 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1230694327] [2019-11-28 00:07:32,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 00:07:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:07:32,198 WARN L253 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-28 00:07:32,203 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:07:32,273 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:07:32,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:07:32,296 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804543276] [2019-11-28 00:07:32,296 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 00:07:32,296 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230694327] [2019-11-28 00:07:32,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:07:32,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 00:07:32,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11055109] [2019-11-28 00:07:32,304 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 00:07:32,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:07:32,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 00:07:32,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 00:07:32,320 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2019-11-28 00:07:32,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:07:32,408 INFO L93 Difference]: Finished difference Result 40 states and 57 transitions. [2019-11-28 00:07:32,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 00:07:32,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-28 00:07:32,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:07:32,421 INFO L225 Difference]: With dead ends: 40 [2019-11-28 00:07:32,421 INFO L226 Difference]: Without dead ends: 16 [2019-11-28 00:07:32,424 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 00:07:32,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-28 00:07:32,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2019-11-28 00:07:32,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 00:07:32,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-11-28 00:07:32,459 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 4 [2019-11-28 00:07:32,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:07:32,460 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-11-28 00:07:32,460 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 00:07:32,460 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-11-28 00:07:32,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 00:07:32,461 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:07:32,461 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-28 00:07:32,665 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:32,666 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:07:32,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:07:32,667 INFO L82 PathProgramCache]: Analyzing trace with hash 759715009, now seen corresponding path program 1 times [2019-11-28 00:07:32,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:07:32,668 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041643576] [2019-11-28 00:07:32,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:07:32,683 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 00:07:32,683 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1339846231] [2019-11-28 00:07:32,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 00:07:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:07:32,715 WARN L253 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-28 00:07:32,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:07:32,880 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 28 [2019-11-28 00:07:32,990 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:07:33,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:07:33,012 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041643576] [2019-11-28 00:07:33,013 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 00:07:33,013 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339846231] [2019-11-28 00:07:33,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-28 00:07:33,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-11-28 00:07:33,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668864214] [2019-11-28 00:07:33,016 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 00:07:33,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:07:33,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 00:07:33,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 00:07:33,018 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 5 states. [2019-11-28 00:07:33,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:07:33,206 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2019-11-28 00:07:33,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 00:07:33,207 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-28 00:07:33,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:07:33,208 INFO L225 Difference]: With dead ends: 26 [2019-11-28 00:07:33,208 INFO L226 Difference]: Without dead ends: 20 [2019-11-28 00:07:33,209 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-28 00:07:33,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-28 00:07:33,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2019-11-28 00:07:33,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-28 00:07:33,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-11-28 00:07:33,217 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 8 [2019-11-28 00:07:33,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:07:33,217 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-11-28 00:07:33,218 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 00:07:33,218 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-11-28 00:07:33,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 00:07:33,219 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:07:33,219 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-28 00:07:33,431 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:33,432 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:07:33,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:07:33,433 INFO L82 PathProgramCache]: Analyzing trace with hash 759774591, now seen corresponding path program 1 times [2019-11-28 00:07:33,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:07:33,434 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446433634] [2019-11-28 00:07:33,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:07:33,453 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 00:07:33,454 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1328293755] [2019-11-28 00:07:33,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 00:07:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:07:33,495 WARN L253 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-28 00:07:33,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:07:35,723 WARN L192 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2019-11-28 00:07:35,849 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:07:35,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:07:35,863 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446433634] [2019-11-28 00:07:35,863 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 00:07:35,863 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328293755] [2019-11-28 00:07:35,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-28 00:07:35,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-11-28 00:07:35,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175496605] [2019-11-28 00:07:35,865 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 00:07:35,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:07:35,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 00:07:35,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 00:07:35,866 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2019-11-28 00:07:36,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:07:36,125 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2019-11-28 00:07:36,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 00:07:36,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-28 00:07:36,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:07:36,127 INFO L225 Difference]: With dead ends: 29 [2019-11-28 00:07:36,127 INFO L226 Difference]: Without dead ends: 23 [2019-11-28 00:07:36,127 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-28 00:07:36,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-28 00:07:36,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2019-11-28 00:07:36,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-28 00:07:36,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-11-28 00:07:36,138 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 8 [2019-11-28 00:07:36,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:07:36,139 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-11-28 00:07:36,139 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 00:07:36,139 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-11-28 00:07:36,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 00:07:36,140 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:07:36,140 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1] [2019-11-28 00:07:36,344 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:36,345 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:07:36,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:07:36,345 INFO L82 PathProgramCache]: Analyzing trace with hash -54520842, now seen corresponding path program 2 times [2019-11-28 00:07:36,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:07:36,346 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302258829] [2019-11-28 00:07:36,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:07:36,358 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 00:07:36,358 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [26918204] [2019-11-28 00:07:36,358 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 00:07:36,392 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 00:07:36,392 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 00:07:36,393 WARN L253 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 26 conjunts are in the unsatisfiable core [2019-11-28 00:07:36,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:07:36,577 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:07:36,594 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:07:36,595 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302258829] [2019-11-28 00:07:36,595 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 00:07:36,595 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26918204] [2019-11-28 00:07:36,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-28 00:07:36,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-28 00:07:36,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130764004] [2019-11-28 00:07:36,597 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 00:07:36,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:07:36,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 00:07:36,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-28 00:07:36,598 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 6 states. [2019-11-28 00:07:36,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:07:36,866 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2019-11-28 00:07:36,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 00:07:36,867 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-28 00:07:36,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:07:36,868 INFO L225 Difference]: With dead ends: 33 [2019-11-28 00:07:36,868 INFO L226 Difference]: Without dead ends: 27 [2019-11-28 00:07:36,869 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-28 00:07:36,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-28 00:07:36,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2019-11-28 00:07:36,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-28 00:07:36,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-11-28 00:07:36,877 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12 [2019-11-28 00:07:36,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:07:36,878 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-11-28 00:07:36,878 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 00:07:36,878 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-11-28 00:07:36,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 00:07:36,879 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:07:36,879 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2019-11-28 00:07:37,083 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:37,084 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:07:37,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:07:37,085 INFO L82 PathProgramCache]: Analyzing trace with hash -54461260, now seen corresponding path program 1 times [2019-11-28 00:07:37,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:07:37,086 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809288813] [2019-11-28 00:07:37,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:07:37,110 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 00:07:37,110 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1000468764] [2019-11-28 00:07:37,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:07:37,146 WARN L253 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 29 conjunts are in the unsatisfiable core [2019-11-28 00:07:37,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:07:39,313 WARN L192 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2019-11-28 00:07:41,515 WARN L192 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-11-28 00:07:41,618 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:07:41,635 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:07:41,635 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809288813] [2019-11-28 00:07:41,635 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 00:07:41,635 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000468764] [2019-11-28 00:07:41,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-28 00:07:41,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-28 00:07:41,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632580750] [2019-11-28 00:07:41,636 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 00:07:41,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:07:41,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 00:07:41,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-28 00:07:41,637 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 6 states. [2019-11-28 00:07:43,894 WARN L192 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 49 [2019-11-28 00:07:44,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:07:44,113 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2019-11-28 00:07:44,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 00:07:44,114 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-28 00:07:44,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:07:44,115 INFO L225 Difference]: With dead ends: 33 [2019-11-28 00:07:44,115 INFO L226 Difference]: Without dead ends: 27 [2019-11-28 00:07:44,116 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-28 00:07:44,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-28 00:07:44,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2019-11-28 00:07:44,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-28 00:07:44,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-11-28 00:07:44,131 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12 [2019-11-28 00:07:44,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:07:44,131 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-11-28 00:07:44,131 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 00:07:44,132 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-11-28 00:07:44,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 00:07:44,133 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:07:44,133 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2019-11-28 00:07:44,342 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:44,342 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:07:44,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:07:44,343 INFO L82 PathProgramCache]: Analyzing trace with hash -863867468, now seen corresponding path program 2 times [2019-11-28 00:07:44,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:07:44,344 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021709384] [2019-11-28 00:07:44,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:07:44,353 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 00:07:44,354 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [64982289] [2019-11-28 00:07:44,354 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:44,385 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 00:07:44,385 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 00:07:44,387 WARN L253 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-28 00:07:44,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:07:44,571 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:07:44,586 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:07:44,586 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021709384] [2019-11-28 00:07:44,587 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 00:07:44,587 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64982289] [2019-11-28 00:07:44,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-28 00:07:44,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-28 00:07:44,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746347268] [2019-11-28 00:07:44,588 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 00:07:44,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:07:44,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 00:07:44,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-28 00:07:44,589 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 6 states. [2019-11-28 00:07:45,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:07:45,036 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2019-11-28 00:07:45,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 00:07:45,036 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-28 00:07:45,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:07:45,037 INFO L225 Difference]: With dead ends: 37 [2019-11-28 00:07:45,037 INFO L226 Difference]: Without dead ends: 31 [2019-11-28 00:07:45,038 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-28 00:07:45,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-28 00:07:45,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2019-11-28 00:07:45,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 00:07:45,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-11-28 00:07:45,046 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 12 [2019-11-28 00:07:45,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:07:45,046 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-11-28 00:07:45,046 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 00:07:45,046 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-11-28 00:07:45,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 00:07:45,047 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:07:45,047 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1] [2019-11-28 00:07:45,250 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:45,251 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:07:45,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:07:45,252 INFO L82 PathProgramCache]: Analyzing trace with hash -863807886, now seen corresponding path program 2 times [2019-11-28 00:07:45,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:07:45,253 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13068593] [2019-11-28 00:07:45,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:07:45,261 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 00:07:45,261 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758316654] [2019-11-28 00:07:45,261 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:45,289 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 00:07:45,289 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 00:07:45,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-28 00:07:45,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:07:45,352 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:07:45,363 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:07:45,364 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13068593] [2019-11-28 00:07:45,364 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 00:07:45,364 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758316654] [2019-11-28 00:07:45,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-28 00:07:45,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-28 00:07:45,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563850506] [2019-11-28 00:07:45,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 00:07:45,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:07:45,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 00:07:45,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-28 00:07:45,366 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 6 states. [2019-11-28 00:07:45,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:07:45,531 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2019-11-28 00:07:45,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 00:07:45,531 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-28 00:07:45,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:07:45,532 INFO L225 Difference]: With dead ends: 38 [2019-11-28 00:07:45,532 INFO L226 Difference]: Without dead ends: 32 [2019-11-28 00:07:45,533 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-28 00:07:45,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-28 00:07:45,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 22. [2019-11-28 00:07:45,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-28 00:07:45,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-11-28 00:07:45,540 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12 [2019-11-28 00:07:45,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:07:45,541 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-11-28 00:07:45,541 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 00:07:45,541 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-11-28 00:07:45,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 00:07:45,541 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:07:45,542 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1] [2019-11-28 00:07:45,745 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:45,746 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:07:45,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:07:45,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1087688533, now seen corresponding path program 3 times [2019-11-28 00:07:45,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:07:45,747 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906396949] [2019-11-28 00:07:45,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:07:45,756 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 00:07:45,756 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [320749506] [2019-11-28 00:07:45,756 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:45,794 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-28 00:07:45,794 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 00:07:45,798 WARN L253 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 34 conjunts are in the unsatisfiable core [2019-11-28 00:07:45,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:07:45,989 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 26 [2019-11-28 00:07:46,333 WARN L192 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2019-11-28 00:07:46,336 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:07:46,435 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:07:46,456 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-28 00:07:46,457 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906396949] [2019-11-28 00:07:46,457 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 00:07:46,457 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320749506] [2019-11-28 00:07:46,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-28 00:07:46,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-11-28 00:07:46,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204393685] [2019-11-28 00:07:46,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 00:07:46,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:07:46,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 00:07:46,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-28 00:07:46,459 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 8 states. [2019-11-28 00:07:46,700 WARN L192 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 30 [2019-11-28 00:07:47,084 WARN L192 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2019-11-28 00:07:47,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:07:47,244 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2019-11-28 00:07:47,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 00:07:47,248 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2019-11-28 00:07:47,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:07:47,248 INFO L225 Difference]: With dead ends: 41 [2019-11-28 00:07:47,248 INFO L226 Difference]: Without dead ends: 35 [2019-11-28 00:07:47,249 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2019-11-28 00:07:47,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-28 00:07:47,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2019-11-28 00:07:47,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-28 00:07:47,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-11-28 00:07:47,259 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 16 [2019-11-28 00:07:47,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:07:47,259 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-11-28 00:07:47,259 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 00:07:47,260 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-11-28 00:07:47,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 00:07:47,260 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:07:47,260 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1] [2019-11-28 00:07:47,465 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:47,465 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:07:47,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:07:47,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1087628951, now seen corresponding path program 3 times [2019-11-28 00:07:47,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:07:47,467 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468957299] [2019-11-28 00:07:47,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:07:47,477 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 00:07:47,478 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [701847695] [2019-11-28 00:07:47,478 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:47,518 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-28 00:07:47,518 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 00:07:47,519 WARN L253 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 28 conjunts are in the unsatisfiable core [2019-11-28 00:07:47,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:07:48,233 WARN L192 SmtUtils]: Spent 599.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2019-11-28 00:07:48,235 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-28 00:07:49,453 WARN L192 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 37 [2019-11-28 00:07:51,588 WARN L192 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2019-11-28 00:07:51,590 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:07:51,620 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-28 00:07:51,621 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468957299] [2019-11-28 00:07:51,621 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 00:07:51,621 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701847695] [2019-11-28 00:07:51,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-28 00:07:51,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-11-28 00:07:51,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335740269] [2019-11-28 00:07:51,622 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 00:07:51,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:07:51,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 00:07:51,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-11-28 00:07:51,623 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 8 states. [2019-11-28 00:07:51,931 WARN L192 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2019-11-28 00:07:53,778 WARN L192 SmtUtils]: Spent 1.81 s on a formula simplification that was a NOOP. DAG size: 36 [2019-11-28 00:07:53,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:07:53,876 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2019-11-28 00:07:53,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 00:07:53,877 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2019-11-28 00:07:53,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:07:53,878 INFO L225 Difference]: With dead ends: 44 [2019-11-28 00:07:53,879 INFO L226 Difference]: Without dead ends: 38 [2019-11-28 00:07:53,879 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-28 00:07:53,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-28 00:07:53,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2019-11-28 00:07:53,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 00:07:53,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-11-28 00:07:53,898 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 16 [2019-11-28 00:07:53,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:07:53,899 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-11-28 00:07:53,899 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 00:07:53,899 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-11-28 00:07:53,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 00:07:53,900 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:07:53,900 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1] [2019-11-28 00:07:54,112 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:54,113 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:07:54,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:07:54,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1897035159, now seen corresponding path program 4 times [2019-11-28 00:07:54,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:07:54,115 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413095056] [2019-11-28 00:07:54,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:07:54,125 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-28 00:07:54,126 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [35158907] [2019-11-28 00:07:54,126 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:07:54,164 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-28 00:07:54,164 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 00:07:54,165 WARN L253 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-28 00:07:54,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:07:54,194 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:07:56,231 WARN L192 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 14 [2019-11-28 00:08:00,318 WARN L192 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 29 DAG size of output: 29 [2019-11-28 00:08:00,320 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:08:00,344 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:08:04,362 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 4 refuted. 1 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-28 00:08:04,362 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413095056] [2019-11-28 00:08:04,363 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-28 00:08:04,363 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35158907] [2019-11-28 00:08:04,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-28 00:08:04,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-11-28 00:08:04,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070752562] [2019-11-28 00:08:04,364 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 00:08:04,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:08:04,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 00:08:04,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=25, Unknown=3, NotChecked=0, Total=42 [2019-11-28 00:08:04,364 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 7 states. [2019-11-28 00:08:04,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:08:04,430 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2019-11-28 00:08:04,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 00:08:04,430 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2019-11-28 00:08:04,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:08:04,431 INFO L225 Difference]: With dead ends: 26 [2019-11-28 00:08:04,431 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 00:08:04,431 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=21, Invalid=32, Unknown=3, NotChecked=0, Total=56 [2019-11-28 00:08:04,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 00:08:04,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 00:08:04,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 00:08:04,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 00:08:04,432 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-11-28 00:08:04,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:08:04,432 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 00:08:04,432 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 00:08:04,432 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 00:08:04,432 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 00:08:04,633 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:08:04,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 00:08:05,824 WARN L192 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 117 DAG size of output: 40 [2019-11-28 00:08:05,826 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 00:08:05,826 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-11-28 00:08:05,826 INFO L246 CegarLoopResult]: For program point L7(lines 7 10) no Hoare annotation was computed. [2019-11-28 00:08:05,826 INFO L242 CegarLoopResult]: At program point L7-2(lines 33 34) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~u~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~v~0)) (* (* ULTIMATE.start_main_~a~0 2) ULTIMATE.start_main_~b~0))) [2019-11-28 00:08:05,827 INFO L246 CegarLoopResult]: For program point L36(lines 36 42) no Hoare annotation was computed. [2019-11-28 00:08:05,827 INFO L246 CegarLoopResult]: For program point L7-3(lines 7 10) no Hoare annotation was computed. [2019-11-28 00:08:05,827 INFO L242 CegarLoopResult]: At program point L36-2(lines 30 43) the Hoare annotation is: (let ((.cse0 (= (+ (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~u~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~v~0)) (* (* ULTIMATE.start_main_~a~0 2) ULTIMATE.start_main_~b~0)))) (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0) (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~u~0) (exists ((|v_ULTIMATE.start_main_#t~ret0_8| Int)) (let ((.cse1 (mod |v_ULTIMATE.start_main_#t~ret0_8| 4294967296))) (and (= .cse1 ULTIMATE.start_main_~a~0) (<= .cse1 2147483647)))) (<= 1 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (<= 1 ULTIMATE.start_main_~b~0) .cse0 (exists ((|v_ULTIMATE.start_main_#t~ret1_9| Int)) (let ((.cse2 (mod |v_ULTIMATE.start_main_#t~ret1_9| 4294967296))) (and (<= .cse2 2147483647) (= ULTIMATE.start_main_~b~0 .cse2)))) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~v~0)))) [2019-11-28 00:08:05,827 INFO L249 CegarLoopResult]: At program point L7-5(lines 6 12) the Hoare annotation is: true [2019-11-28 00:08:05,827 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 00:08:05,827 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 00:08:05,827 INFO L246 CegarLoopResult]: For program point L30-2(lines 30 43) no Hoare annotation was computed. [2019-11-28 00:08:05,828 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-11-28 00:08:05,828 INFO L249 CegarLoopResult]: At program point L49(lines 14 50) the Hoare annotation is: true [2019-11-28 00:08:05,828 INFO L246 CegarLoopResult]: For program point L8(lines 8 9) no Hoare annotation was computed. [2019-11-28 00:08:05,828 INFO L246 CegarLoopResult]: For program point L8-1(lines 8 9) no Hoare annotation was computed. [2019-11-28 00:08:05,843 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] [2019-11-28 00:08:05,844 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] [2019-11-28 00:08:05,844 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] [2019-11-28 00:08:05,844 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] [2019-11-28 00:08:05,852 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] [2019-11-28 00:08:05,852 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] [2019-11-28 00:08:05,852 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] [2019-11-28 00:08:05,852 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] [2019-11-28 00:08:05,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:08:05 BoogieIcfgContainer [2019-11-28 00:08:05,855 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 00:08:05,856 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 00:08:05,856 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 00:08:05,856 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 00:08:05,857 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:07:31" (3/4) ... [2019-11-28 00:08:05,860 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 00:08:05,868 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-28 00:08:05,869 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 00:08:05,892 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (1 == cond && x * u + y * v == a * 2 * b) || (((((((b == u && (\exists v_ULTIMATE.start_main_#t~ret0_8 : int :: v_ULTIMATE.start_main_#t~ret0_8 % 4294967296 == a && v_ULTIMATE.start_main_#t~ret0_8 % 4294967296 <= 2147483647)) && 1 <= a) && a == x) && 1 <= b) && x * u + y * v == a * 2 * b) && (\exists v_ULTIMATE.start_main_#t~ret1_9 : int :: v_ULTIMATE.start_main_#t~ret1_9 % 4294967296 <= 2147483647 && b == v_ULTIMATE.start_main_#t~ret1_9 % 4294967296)) && a == v) [2019-11-28 00:08:05,914 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 00:08:05,915 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 00:08:05,916 INFO L168 Benchmark]: Toolchain (without parser) took 34702.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 957.7 MB in the beginning and 823.1 MB in the end (delta: 134.6 MB). Peak memory consumption was 292.9 MB. Max. memory is 11.5 GB. [2019-11-28 00:08:05,917 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 00:08:05,918 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.37 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 947.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:08:05,918 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.05 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 77.6 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -126.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-11-28 00:08:05,919 INFO L168 Benchmark]: Boogie Preprocessor took 22.34 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-28 00:08:05,920 INFO L168 Benchmark]: RCFGBuilder took 259.92 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2019-11-28 00:08:05,921 INFO L168 Benchmark]: TraceAbstraction took 33940.05 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 80.7 MB). Free memory was 1.1 GB in the beginning and 830.9 MB in the end (delta: 222.9 MB). Peak memory consumption was 303.6 MB. Max. memory is 11.5 GB. [2019-11-28 00:08:05,921 INFO L168 Benchmark]: Witness Printer took 58.85 ms. Allocated memory is still 1.2 GB. Free memory was 830.9 MB in the beginning and 823.1 MB in the end (delta: 7.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 11.5 GB. [2019-11-28 00:08:05,925 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 315.37 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 947.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 96.05 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 77.6 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -126.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.34 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 259.92 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 33940.05 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 80.7 MB). Free memory was 1.1 GB in the beginning and 830.9 MB in the end (delta: 222.9 MB). Peak memory consumption was 303.6 MB. Max. memory is 11.5 GB. * Witness Printer took 58.85 ms. Allocated memory is still 1.2 GB. Free memory was 830.9 MB in the beginning and 823.1 MB in the end (delta: 7.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 9]: 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: 33]: Loop Invariant Derived loop invariant: 1 == cond && x * u + y * v == a * 2 * b - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant [2019-11-28 00:08:05,937 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] [2019-11-28 00:08:05,938 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] [2019-11-28 00:08:05,938 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] [2019-11-28 00:08:05,938 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] [2019-11-28 00:08:05,939 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] [2019-11-28 00:08:05,940 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] [2019-11-28 00:08:05,940 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] [2019-11-28 00:08:05,940 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] Derived loop invariant: (1 == cond && x * u + y * v == a * 2 * b) || (((((((b == u && (\exists v_ULTIMATE.start_main_#t~ret0_8 : int :: v_ULTIMATE.start_main_#t~ret0_8 % 4294967296 == a && v_ULTIMATE.start_main_#t~ret0_8 % 4294967296 <= 2147483647)) && 1 <= a) && a == x) && 1 <= b) && x * u + y * v == a * 2 * b) && (\exists v_ULTIMATE.start_main_#t~ret1_9 : int :: v_ULTIMATE.start_main_#t~ret1_9 % 4294967296 <= 2147483647 && b == v_ULTIMATE.start_main_#t~ret1_9 % 4294967296)) && a == v) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 2 error locations. Result: SAFE, OverallTime: 32.6s, OverallIterations: 10, TraceHistogramMax: 4, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, HoareTripleCheckerStatistics: 53 SDtfs, 107 SDslu, 171 SDs, 0 SdLazy, 461 SolverSat, 106 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 56 SyntacticMatches, 9 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 27.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 51 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 18 NumberOfFragments, 90 HoareAnnotationTreeSize, 4 FomulaSimplifications, 6267 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 4 FomulaSimplificationsInter, 195 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 22.6s InterpolantComputationTime, 116 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 106 ConstructedInterpolants, 68 QuantifiedInterpolants, 44895 SizeOfPredicates, 95 NumberOfNonLiveVariables, 421 ConjunctsInSsa, 255 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 35/90 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...