/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound50.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:09:54,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:09:54,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:09:54,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 05:09:54,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:09:54,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:09:54,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:09:54,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:09:54,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:09:54,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:09:54,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:09:54,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:09:54,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:09:54,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:09:54,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:09:54,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:09:54,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:09:54,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:09:54,287 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:09:54,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:09:54,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:09:54,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:09:54,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:09:54,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:09:54,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:09:54,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:09:54,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:09:54,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:09:54,297 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:09:54,376 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:09:54,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:09:54,380 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:09:54,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:09:54,381 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:09:54,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:09:54,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:09:54,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:09:54,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:09:54,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:09:54,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:09:54,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:09:54,384 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:09:54,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:09:54,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:09:54,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:09:54,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:09:54,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:09:54,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:09:54,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:09:54,387 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:09:54,387 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:09:54,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:09:54,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:09:54,388 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:09:54,389 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:09:54,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:09:54,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:09:54,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:09:54,837 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:09:54,837 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:09:54,838 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound50.i [2020-12-22 05:09:54,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/334039dba/59bfe7994dbe41a3b03df7b5afb31d7f/FLAG9ad9ed918 [2020-12-22 05:09:55,632 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:09:55,633 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound50.i [2020-12-22 05:09:55,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/334039dba/59bfe7994dbe41a3b03df7b5afb31d7f/FLAG9ad9ed918 [2020-12-22 05:09:55,971 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/334039dba/59bfe7994dbe41a3b03df7b5afb31d7f [2020-12-22 05:09:55,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:09:55,976 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:09:55,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:09:55,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:09:55,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:09:55,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:09:55" (1/1) ... [2020-12-22 05:09:55,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f0f1a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:09:55, skipping insertion in model container [2020-12-22 05:09:55,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:09:55" (1/1) ... [2020-12-22 05:09:55,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:09:56,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:09:56,169 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound50.i[950,963] [2020-12-22 05:09:56,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:09:56,198 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:09:56,213 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound50.i[950,963] [2020-12-22 05:09:56,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:09:56,238 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:09:56,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:09:56 WrapperNode [2020-12-22 05:09:56,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:09:56,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:09:56,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:09:56,242 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:09:56,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:09:56" (1/1) ... [2020-12-22 05:09:56,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:09:56" (1/1) ... [2020-12-22 05:09:56,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:09:56,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:09:56,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:09:56,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:09:56,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:09:56" (1/1) ... [2020-12-22 05:09:56,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:09:56" (1/1) ... [2020-12-22 05:09:56,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:09:56" (1/1) ... [2020-12-22 05:09:56,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:09:56" (1/1) ... [2020-12-22 05:09:56,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:09:56" (1/1) ... [2020-12-22 05:09:56,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:09:56" (1/1) ... [2020-12-22 05:09:56,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:09:56" (1/1) ... [2020-12-22 05:09:56,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:09:56,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:09:56,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:09:56,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:09:56,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:09:56" (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 [2020-12-22 05:09:56,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:09:56,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:09:56,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:09:56,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:09:56,782 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:09:56,782 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-22 05:09:56,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:09:56 BoogieIcfgContainer [2020-12-22 05:09:56,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:09:56,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:09:56,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:09:56,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:09:56,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:09:55" (1/3) ... [2020-12-22 05:09:56,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4e21df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:09:56, skipping insertion in model container [2020-12-22 05:09:56,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:09:56" (2/3) ... [2020-12-22 05:09:56,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4e21df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:09:56, skipping insertion in model container [2020-12-22 05:09:56,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:09:56" (3/3) ... [2020-12-22 05:09:56,814 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_valuebound50.i [2020-12-22 05:09:56,835 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:09:56,843 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 05:09:56,876 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 05:09:56,907 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:09:56,907 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:09:56,907 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:09:56,908 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:09:56,908 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:09:56,908 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:09:56,908 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:09:56,908 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:09:56,925 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-12-22 05:09:56,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 05:09:56,936 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:09:56,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:09:56,937 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:09:56,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:09:56,944 INFO L82 PathProgramCache]: Analyzing trace with hash -174569337, now seen corresponding path program 1 times [2020-12-22 05:09:56,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:09:56,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408834625] [2020-12-22 05:09:56,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:09:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:09:57,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:09:57,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408834625] [2020-12-22 05:09:57,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:09:57,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:09:57,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420894430] [2020-12-22 05:09:57,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:09:57,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:09:57,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:09:57,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:09:57,148 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2020-12-22 05:09:57,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:09:57,170 INFO L93 Difference]: Finished difference Result 49 states and 72 transitions. [2020-12-22 05:09:57,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:09:57,172 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-12-22 05:09:57,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:09:57,182 INFO L225 Difference]: With dead ends: 49 [2020-12-22 05:09:57,183 INFO L226 Difference]: Without dead ends: 22 [2020-12-22 05:09:57,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:09:57,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-22 05:09:57,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-12-22 05:09:57,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-22 05:09:57,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-12-22 05:09:57,226 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 14 [2020-12-22 05:09:57,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:09:57,227 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-12-22 05:09:57,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:09:57,227 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-12-22 05:09:57,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 05:09:57,228 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:09:57,228 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:09:57,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:09:57,229 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:09:57,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:09:57,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1454099019, now seen corresponding path program 1 times [2020-12-22 05:09:57,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:09:57,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131352416] [2020-12-22 05:09:57,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:09:57,264 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:09:57,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1285747422] [2020-12-22 05:09:57,266 INFO L95 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 [2020-12-22 05:09:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:09:57,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 05:09:57,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:09:57,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:09:57,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131352416] [2020-12-22 05:09:57,786 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:09:57,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285747422] [2020-12-22 05:09:57,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:09:57,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 05:09:57,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690156243] [2020-12-22 05:09:57,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:09:57,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:09:57,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:09:57,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:09:57,800 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 9 states. [2020-12-22 05:09:58,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:09:58,191 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-12-22 05:09:58,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:09:58,191 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-12-22 05:09:58,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:09:58,193 INFO L225 Difference]: With dead ends: 36 [2020-12-22 05:09:58,193 INFO L226 Difference]: Without dead ends: 30 [2020-12-22 05:09:58,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-12-22 05:09:58,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-22 05:09:58,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-12-22 05:09:58,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-22 05:09:58,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-12-22 05:09:58,202 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 15 [2020-12-22 05:09:58,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:09:58,202 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-12-22 05:09:58,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:09:58,203 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-12-22 05:09:58,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 05:09:58,203 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:09:58,204 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:09:58,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 05:09:58,418 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:09:58,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:09:58,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1566788422, now seen corresponding path program 1 times [2020-12-22 05:09:58,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:09:58,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794704317] [2020-12-22 05:09:58,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:09:58,456 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:09:58,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [405917598] [2020-12-22 05:09:58,456 INFO L95 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 [2020-12-22 05:09:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:09:58,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 05:09:58,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:09:58,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:09:58,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794704317] [2020-12-22 05:09:58,703 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:09:58,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405917598] [2020-12-22 05:09:58,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:09:58,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:09:58,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622084587] [2020-12-22 05:09:58,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:09:58,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:09:58,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:09:58,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:09:58,705 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 9 states. [2020-12-22 05:09:59,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:09:59,354 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2020-12-22 05:09:59,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:09:59,355 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-12-22 05:09:59,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:09:59,356 INFO L225 Difference]: With dead ends: 45 [2020-12-22 05:09:59,356 INFO L226 Difference]: Without dead ends: 39 [2020-12-22 05:09:59,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:09:59,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-22 05:09:59,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26. [2020-12-22 05:09:59,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-22 05:09:59,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-12-22 05:09:59,362 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 17 [2020-12-22 05:09:59,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:09:59,363 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-12-22 05:09:59,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:09:59,363 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-12-22 05:09:59,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 05:09:59,364 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:09:59,364 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:09:59,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:09:59,577 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:09:59,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:09:59,578 INFO L82 PathProgramCache]: Analyzing trace with hash 890165184, now seen corresponding path program 1 times [2020-12-22 05:09:59,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:09:59,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672860146] [2020-12-22 05:09:59,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:09:59,595 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:09:59,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1292589773] [2020-12-22 05:09:59,596 INFO L95 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 [2020-12-22 05:09:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:09:59,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 05:09:59,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:09:59,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:09:59,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672860146] [2020-12-22 05:09:59,669 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:09:59,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292589773] [2020-12-22 05:09:59,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:09:59,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:09:59,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215336085] [2020-12-22 05:09:59,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:09:59,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:09:59,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:09:59,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:09:59,671 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 3 states. [2020-12-22 05:09:59,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:09:59,709 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2020-12-22 05:09:59,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:09:59,710 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-22 05:09:59,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:09:59,711 INFO L225 Difference]: With dead ends: 45 [2020-12-22 05:09:59,711 INFO L226 Difference]: Without dead ends: 28 [2020-12-22 05:09:59,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:09:59,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-22 05:09:59,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-22 05:09:59,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-22 05:09:59,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-12-22 05:09:59,717 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 19 [2020-12-22 05:09:59,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:09:59,717 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-12-22 05:09:59,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:09:59,717 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-12-22 05:09:59,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 05:09:59,718 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:09:59,718 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:09:59,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:09:59,934 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:09:59,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:09:59,935 INFO L82 PathProgramCache]: Analyzing trace with hash 567763771, now seen corresponding path program 1 times [2020-12-22 05:09:59,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:09:59,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163293207] [2020-12-22 05:09:59,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:09:59,955 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:09:59,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1177774590] [2020-12-22 05:09:59,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-12-22 05:10:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:10:00,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-22 05:10:00,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:10:00,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 05:10:00,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163293207] [2020-12-22 05:10:00,230 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:10:00,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177774590] [2020-12-22 05:10:00,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:10:00,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:10:00,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887167639] [2020-12-22 05:10:00,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:10:00,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:10:00,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:10:00,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:10:00,233 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 7 states. [2020-12-22 05:10:00,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:10:00,448 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-12-22 05:10:00,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:10:00,448 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-12-22 05:10:00,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:10:00,449 INFO L225 Difference]: With dead ends: 40 [2020-12-22 05:10:00,449 INFO L226 Difference]: Without dead ends: 34 [2020-12-22 05:10:00,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:10:00,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-22 05:10:00,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2020-12-22 05:10:00,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-22 05:10:00,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-12-22 05:10:00,457 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 21 [2020-12-22 05:10:00,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:10:00,457 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-12-22 05:10:00,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:10:00,457 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-12-22 05:10:00,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 05:10:00,458 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:10:00,459 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:10:00,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:10:00,664 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:10:00,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:10:00,666 INFO L82 PathProgramCache]: Analyzing trace with hash -572229456, now seen corresponding path program 2 times [2020-12-22 05:10:00,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:10:00,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609623299] [2020-12-22 05:10:00,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:10:00,686 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:10:00,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [647938861] [2020-12-22 05:10:00,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-12-22 05:10:01,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:10:01,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:10:01,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 05:10:01,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:10:02,880 WARN L197 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 32 [2020-12-22 05:10:03,112 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:10:03,616 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:10:07,414 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:10:07,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609623299] [2020-12-22 05:10:07,415 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:10:07,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647938861] [2020-12-22 05:10:07,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:10:07,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-22 05:10:07,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250483556] [2020-12-22 05:10:07,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 05:10:07,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:10:07,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 05:10:07,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:10:07,422 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 13 states. [2020-12-22 05:10:08,679 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2020-12-22 05:10:09,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:10:09,243 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2020-12-22 05:10:09,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:10:09,244 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2020-12-22 05:10:09,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:10:09,244 INFO L225 Difference]: With dead ends: 57 [2020-12-22 05:10:09,245 INFO L226 Difference]: Without dead ends: 33 [2020-12-22 05:10:09,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-12-22 05:10:09,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-22 05:10:09,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-22 05:10:09,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-22 05:10:09,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-12-22 05:10:09,251 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 25 [2020-12-22 05:10:09,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:10:09,252 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-12-22 05:10:09,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 05:10:09,252 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-12-22 05:10:09,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 05:10:09,253 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:10:09,253 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:10:09,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 05:10:09,457 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:10:09,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:10:09,458 INFO L82 PathProgramCache]: Analyzing trace with hash -2122892309, now seen corresponding path program 3 times [2020-12-22 05:10:09,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:10:09,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092459923] [2020-12-22 05:10:09,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:10:09,482 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:10:09,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787926150] [2020-12-22 05:10:09,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-12-22 05:10:12,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 05:10:12,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:10:12,583 WARN L261 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 62 conjunts are in the unsatisfiable core [2020-12-22 05:10:12,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:10:13,162 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2020-12-22 05:10:13,650 WARN L197 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2020-12-22 05:10:16,101 WARN L197 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2020-12-22 05:10:17,650 WARN L197 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 38 DAG size of output: 28 [2020-12-22 05:10:17,786 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:10:18,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092459923] [2020-12-22 05:10:18,041 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:10:18,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787926150] [2020-12-22 05:10:18,041 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2020-12-22 05:10:18,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:10:18,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-22 05:10:18,042 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-22 05:10:18,042 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 05:10:18,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:10:18,276 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-22 05:10:18,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:10:18 BoogieIcfgContainer [2020-12-22 05:10:18,276 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:10:18,277 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:10:18,277 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:10:18,277 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:10:18,278 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:09:56" (3/4) ... [2020-12-22 05:10:18,282 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 05:10:18,282 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:10:18,284 INFO L168 Benchmark]: Toolchain (without parser) took 22307.25 ms. Allocated memory was 151.0 MB in the beginning and 229.6 MB in the end (delta: 78.6 MB). Free memory was 127.5 MB in the beginning and 108.0 MB in the end (delta: 19.4 MB). Peak memory consumption was 98.5 MB. Max. memory is 8.0 GB. [2020-12-22 05:10:18,286 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:10:18,287 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.47 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 117.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 05:10:18,294 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.71 ms. Allocated memory is still 151.0 MB. Free memory was 117.2 MB in the beginning and 115.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:10:18,294 INFO L168 Benchmark]: Boogie Preprocessor took 31.28 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 114.6 MB in the end (delta: 925.1 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:10:18,297 INFO L168 Benchmark]: RCFGBuilder took 475.02 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 99.1 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-12-22 05:10:18,301 INFO L168 Benchmark]: TraceAbstraction took 21480.94 ms. Allocated memory was 151.0 MB in the beginning and 229.6 MB in the end (delta: 78.6 MB). Free memory was 98.7 MB in the beginning and 108.2 MB in the end (delta: -9.5 MB). Peak memory consumption was 97.5 MB. Max. memory is 8.0 GB. [2020-12-22 05:10:18,302 INFO L168 Benchmark]: Witness Printer took 5.32 ms. Allocated memory is still 229.6 MB. Free memory was 108.2 MB in the beginning and 108.0 MB in the end (delta: 190.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:10:18,313 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 261.47 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 117.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 40.71 ms. Allocated memory is still 151.0 MB. Free memory was 117.2 MB in the beginning and 115.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.28 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 114.6 MB in the end (delta: 925.1 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 475.02 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 99.1 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 21480.94 ms. Allocated memory was 151.0 MB in the beginning and 229.6 MB in the end (delta: 78.6 MB). Free memory was 98.7 MB in the beginning and 108.2 MB in the end (delta: -9.5 MB). Peak memory consumption was 97.5 MB. Max. memory is 8.0 GB. * Witness Printer took 5.32 ms. Allocated memory is still 229.6 MB. Free memory was 108.2 MB in the beginning and 108.0 MB in the end (delta: 190.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 21]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L26] unsigned A, B; [L27] unsigned q, r, b; [L28] A = __VERIFIER_nondet_uint() [L16] COND FALSE !(!cond) [L30] B = __VERIFIER_nondet_uint() [L16] COND FALSE !(!cond) [L16] COND FALSE !(!cond) [L16] COND FALSE !(!cond) [L34] q = 0 [L35] r = A [L36] b = B [L37] COND TRUE 1 [L38] COND FALSE !(!(r >= b)) [L39] b = 2 * b [L37] COND TRUE 1 [L38] COND FALSE !(!(r >= b)) [L39] b = 2 * b [L37] COND TRUE 1 [L38] COND TRUE !(r >= b) [L41] COND TRUE 1 [L19] COND FALSE !(!(cond)) [L43] COND FALSE !(!(b != B)) [L44] q = 2 * q [L45] b = b / 2 [L46] COND TRUE r >= b [L47] q = q + 1 [L48] r = r - b [L41] COND TRUE 1 [L19] COND FALSE !(!(cond)) [L43] COND FALSE !(!(b != B)) [L44] q = 2 * q [L45] b = b / 2 [L46] COND TRUE r >= b [L47] q = q + 1 [L48] r = r - b [L41] COND TRUE 1 [L19] COND TRUE !(cond) [L21] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 21.3s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 98 SDtfs, 270 SDslu, 163 SDs, 0 SdLazy, 348 SolverSat, 83 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 18 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 21737 SizeOfPredicates, 35 NumberOfNonLiveVariables, 392 ConjunctsInSsa, 111 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 9/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...