/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/loops-crafted-1/sum_by_3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 04:45:38,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 04:45:38,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 04:45:38,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 04:45:38,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 04:45:38,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 04:45:38,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 04:45:38,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 04:45:38,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 04:45:38,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 04:45:38,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 04:45:38,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 04:45:38,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 04:45:38,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 04:45:38,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 04:45:38,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 04:45:38,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 04:45:38,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 04:45:38,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 04:45:38,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 04:45:38,279 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 04:45:38,335 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 04:45:38,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 04:45:38,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 04:45:38,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 04:45:38,338 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 04:45:38,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 04:45:38,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 04:45:38,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 04:45:38,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 04:45:38,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 04:45:38,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 04:45:38,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 04:45:38,341 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 04:45:38,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 04:45:38,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 04:45:38,343 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 04:45:38,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 04:45:38,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:45:38,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 04:45:38,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 04:45:38,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 04:45:38,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 04:45:38,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 04:45:38,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 04:45:38,345 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 04:45:38,345 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 04:45:38,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 04:45:38,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 04:45:38,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 04:45:38,836 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 04:45:38,837 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 04:45:38,838 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/sum_by_3.c [2020-12-22 04:45:38,935 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8145b368b/d74c214ddf2247d8a4044e653533ae3a/FLAGa2e0b8f86 [2020-12-22 04:45:39,625 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 04:45:39,626 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/sum_by_3.c [2020-12-22 04:45:39,633 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8145b368b/d74c214ddf2247d8a4044e653533ae3a/FLAGa2e0b8f86 [2020-12-22 04:45:39,988 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8145b368b/d74c214ddf2247d8a4044e653533ae3a [2020-12-22 04:45:39,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 04:45:39,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 04:45:39,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 04:45:39,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 04:45:40,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 04:45:40,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:45:39" (1/1) ... [2020-12-22 04:45:40,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d45929d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:45:40, skipping insertion in model container [2020-12-22 04:45:40,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:45:39" (1/1) ... [2020-12-22 04:45:40,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 04:45:40,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 04:45:40,196 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/loops-crafted-1/sum_by_3.c[406,419] [2020-12-22 04:45:40,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:45:40,223 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 04:45:40,238 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/loops-crafted-1/sum_by_3.c[406,419] [2020-12-22 04:45:40,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:45:40,262 INFO L208 MainTranslator]: Completed translation [2020-12-22 04:45:40,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:45:40 WrapperNode [2020-12-22 04:45:40,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 04:45:40,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 04:45:40,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 04:45:40,265 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 04:45:40,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:45:40" (1/1) ... [2020-12-22 04:45:40,283 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:45:40" (1/1) ... [2020-12-22 04:45:40,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 04:45:40,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 04:45:40,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 04:45:40,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 04:45:40,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:45:40" (1/1) ... [2020-12-22 04:45:40,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:45:40" (1/1) ... [2020-12-22 04:45:40,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:45:40" (1/1) ... [2020-12-22 04:45:40,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:45:40" (1/1) ... [2020-12-22 04:45:40,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:45:40" (1/1) ... [2020-12-22 04:45:40,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:45:40" (1/1) ... [2020-12-22 04:45:40,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:45:40" (1/1) ... [2020-12-22 04:45:40,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 04:45:40,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 04:45:40,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 04:45:40,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 04:45:40,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:45:40" (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 04:45:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 04:45:40,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 04:45:40,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 04:45:40,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 04:45:40,767 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 04:45:40,767 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-22 04:45:40,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:45:40 BoogieIcfgContainer [2020-12-22 04:45:40,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 04:45:40,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 04:45:40,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 04:45:40,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 04:45:40,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:45:39" (1/3) ... [2020-12-22 04:45:40,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@487eac69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:45:40, skipping insertion in model container [2020-12-22 04:45:40,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:45:40" (2/3) ... [2020-12-22 04:45:40,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@487eac69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:45:40, skipping insertion in model container [2020-12-22 04:45:40,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:45:40" (3/3) ... [2020-12-22 04:45:40,779 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_by_3.c [2020-12-22 04:45:40,786 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 04:45:40,791 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 04:45:40,811 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 04:45:40,861 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 04:45:40,861 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 04:45:40,861 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 04:45:40,861 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 04:45:40,862 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 04:45:40,862 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 04:45:40,862 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 04:45:40,862 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 04:45:40,880 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-12-22 04:45:40,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 04:45:40,886 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:45:40,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:45:40,887 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:45:40,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:45:40,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1645470860, now seen corresponding path program 1 times [2020-12-22 04:45:40,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:45:40,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432358614] [2020-12-22 04:45:40,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:45:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:45:41,074 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 04:45:41,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432358614] [2020-12-22 04:45:41,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:45:41,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 04:45:41,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272232337] [2020-12-22 04:45:41,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 04:45:41,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:45:41,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 04:45:41,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 04:45:41,103 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-12-22 04:45:41,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:45:41,123 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2020-12-22 04:45:41,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 04:45:41,125 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-22 04:45:41,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:45:41,135 INFO L225 Difference]: With dead ends: 28 [2020-12-22 04:45:41,136 INFO L226 Difference]: Without dead ends: 12 [2020-12-22 04:45:41,139 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 04:45:41,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-22 04:45:41,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-22 04:45:41,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-22 04:45:41,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-12-22 04:45:41,180 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 11 [2020-12-22 04:45:41,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:45:41,181 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-12-22 04:45:41,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 04:45:41,181 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2020-12-22 04:45:41,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 04:45:41,182 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:45:41,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:45:41,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 04:45:41,183 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:45:41,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:45:41,184 INFO L82 PathProgramCache]: Analyzing trace with hash -26777608, now seen corresponding path program 1 times [2020-12-22 04:45:41,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:45:41,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142197587] [2020-12-22 04:45:41,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:45:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:45:41,909 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 32 [2020-12-22 04:45:41,928 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 04:45:41,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142197587] [2020-12-22 04:45:41,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:45:41,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:45:41,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166190874] [2020-12-22 04:45:41,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 04:45:41,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:45:41,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 04:45:41,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:45:41,933 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 7 states. [2020-12-22 04:45:42,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:45:42,278 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-12-22 04:45:42,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 04:45:42,279 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-12-22 04:45:42,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:45:42,280 INFO L225 Difference]: With dead ends: 33 [2020-12-22 04:45:42,281 INFO L226 Difference]: Without dead ends: 29 [2020-12-22 04:45:42,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-12-22 04:45:42,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-22 04:45:42,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 17. [2020-12-22 04:45:42,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-22 04:45:42,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2020-12-22 04:45:42,290 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 11 [2020-12-22 04:45:42,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:45:42,290 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2020-12-22 04:45:42,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 04:45:42,291 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2020-12-22 04:45:42,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 04:45:42,292 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:45:42,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:45:42,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 04:45:42,292 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:45:42,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:45:42,293 INFO L82 PathProgramCache]: Analyzing trace with hash 182012736, now seen corresponding path program 1 times [2020-12-22 04:45:42,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:45:42,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672430409] [2020-12-22 04:45:42,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:45:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:45:42,849 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-22 04:45:43,295 WARN L197 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2020-12-22 04:45:43,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:45:43,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672430409] [2020-12-22 04:45:43,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983989357] [2020-12-22 04:45:43,341 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 04:45:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:45:43,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 04:45:43,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:45:43,922 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 04:45:43,938 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 04:45:43,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:45:43,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 04:45:43,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-12-22 04:45:43,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756771785] [2020-12-22 04:45:43,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 04:45:43,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:45:43,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 04:45:43,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-12-22 04:45:43,986 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 15 states. [2020-12-22 04:45:44,486 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 23 [2020-12-22 04:45:44,675 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 25 [2020-12-22 04:45:44,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:45:44,719 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2020-12-22 04:45:44,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 04:45:44,720 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-12-22 04:45:44,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:45:44,721 INFO L225 Difference]: With dead ends: 45 [2020-12-22 04:45:44,721 INFO L226 Difference]: Without dead ends: 41 [2020-12-22 04:45:44,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-12-22 04:45:44,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-22 04:45:44,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 18. [2020-12-22 04:45:44,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-22 04:45:44,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2020-12-22 04:45:44,729 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 12 [2020-12-22 04:45:44,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:45:44,730 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2020-12-22 04:45:44,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 04:45:44,730 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2020-12-22 04:45:44,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 04:45:44,731 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:45:44,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:45:44,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 04:45:44,946 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:45:44,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:45:44,947 INFO L82 PathProgramCache]: Analyzing trace with hash -828440446, now seen corresponding path program 1 times [2020-12-22 04:45:44,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:45:44,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531801194] [2020-12-22 04:45:44,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:45:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:45:45,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:45:45,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531801194] [2020-12-22 04:45:45,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:45:45,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 04:45:45,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444293908] [2020-12-22 04:45:45,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:45:45,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:45:45,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:45:45,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:45:45,073 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand 4 states. [2020-12-22 04:45:45,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:45:45,103 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2020-12-22 04:45:45,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 04:45:45,103 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-22 04:45:45,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:45:45,105 INFO L225 Difference]: With dead ends: 29 [2020-12-22 04:45:45,105 INFO L226 Difference]: Without dead ends: 18 [2020-12-22 04:45:45,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:45:45,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-22 04:45:45,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-22 04:45:45,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-22 04:45:45,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2020-12-22 04:45:45,113 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 12 [2020-12-22 04:45:45,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:45:45,114 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2020-12-22 04:45:45,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:45:45,114 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-12-22 04:45:45,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 04:45:45,115 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:45:45,115 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:45:45,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 04:45:45,116 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:45:45,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:45:45,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1935421192, now seen corresponding path program 2 times [2020-12-22 04:45:45,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:45:45,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367918504] [2020-12-22 04:45:45,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:45:45,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:45:45,486 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 04:45:45,852 WARN L197 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2020-12-22 04:45:45,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:45:45,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367918504] [2020-12-22 04:45:45,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887707611] [2020-12-22 04:45:45,873 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 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 04:45:45,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:45:45,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:45:45,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-22 04:45:45,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:45:46,164 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 04:45:46,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:45:46,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 04:45:46,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2020-12-22 04:45:46,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561019859] [2020-12-22 04:45:46,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 04:45:46,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:45:46,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 04:45:46,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-12-22 04:45:46,193 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 15 states. [2020-12-22 04:45:46,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:45:46,608 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-12-22 04:45:46,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 04:45:46,609 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-12-22 04:45:46,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:45:46,614 INFO L225 Difference]: With dead ends: 51 [2020-12-22 04:45:46,615 INFO L226 Difference]: Without dead ends: 47 [2020-12-22 04:45:46,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2020-12-22 04:45:46,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-22 04:45:46,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 19. [2020-12-22 04:45:46,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-22 04:45:46,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2020-12-22 04:45:46,635 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 13 [2020-12-22 04:45:46,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:45:46,636 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2020-12-22 04:45:46,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 04:45:46,638 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2020-12-22 04:45:46,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 04:45:46,639 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:45:46,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:45:46,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:45:46,843 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:45:46,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:45:46,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1349092922, now seen corresponding path program 1 times [2020-12-22 04:45:46,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:45:46,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552378708] [2020-12-22 04:45:46,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:45:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:45:47,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:45:47,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552378708] [2020-12-22 04:45:47,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723325404] [2020-12-22 04:45:47,130 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 04:45:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:45:47,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 04:45:47,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:45:47,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 04:45:47,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:45:47,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2020-12-22 04:45:47,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669100365] [2020-12-22 04:45:47,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 04:45:47,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:45:47,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 04:45:47,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-22 04:45:47,378 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 5 states. [2020-12-22 04:45:47,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:45:47,576 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2020-12-22 04:45:47,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:45:47,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-22 04:45:47,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:45:47,577 INFO L225 Difference]: With dead ends: 31 [2020-12-22 04:45:47,577 INFO L226 Difference]: Without dead ends: 24 [2020-12-22 04:45:47,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-22 04:45:47,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-22 04:45:47,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2020-12-22 04:45:47,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-22 04:45:47,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2020-12-22 04:45:47,584 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 13 [2020-12-22 04:45:47,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:45:47,585 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2020-12-22 04:45:47,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 04:45:47,585 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2020-12-22 04:45:47,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 04:45:47,586 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:45:47,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:45:47,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:45:47,787 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:45:47,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:45:47,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1350953607, now seen corresponding path program 1 times [2020-12-22 04:45:47,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:45:47,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974517949] [2020-12-22 04:45:47,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:45:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:45:47,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:45:47,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974517949] [2020-12-22 04:45:47,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095988299] [2020-12-22 04:45:47,943 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 04:45:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:45:47,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 04:45:47,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:45:48,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:45:48,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 04:45:48,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-12-22 04:45:48,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151367992] [2020-12-22 04:45:48,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 04:45:48,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:45:48,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 04:45:48,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:45:48,052 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand 9 states. [2020-12-22 04:45:48,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:45:48,149 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2020-12-22 04:45:48,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 04:45:48,150 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-12-22 04:45:48,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:45:48,150 INFO L225 Difference]: With dead ends: 29 [2020-12-22 04:45:48,150 INFO L226 Difference]: Without dead ends: 20 [2020-12-22 04:45:48,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-12-22 04:45:48,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-22 04:45:48,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-22 04:45:48,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-22 04:45:48,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2020-12-22 04:45:48,157 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2020-12-22 04:45:48,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:45:48,158 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2020-12-22 04:45:48,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 04:45:48,158 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2020-12-22 04:45:48,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 04:45:48,158 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:45:48,159 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:45:48,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:45:48,375 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:45:48,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:45:48,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1143603776, now seen corresponding path program 3 times [2020-12-22 04:45:48,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:45:48,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710315310] [2020-12-22 04:45:48,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:45:48,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:45:50,804 WARN L197 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2020-12-22 04:45:50,828 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:45:50,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710315310] [2020-12-22 04:45:50,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634751620] [2020-12-22 04:45:50,829 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 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 04:46:07,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 04:46:07,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:46:07,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-22 04:46:07,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:46:08,559 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 04:46:08,653 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 15 disjuncts [2020-12-22 04:46:09,811 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 04:46:11,064 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 04:46:12,444 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 04:46:13,190 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 04:46:13,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 04:46:13,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 04:46:13,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528343475] [2020-12-22 04:46:13,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 04:46:13,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:46:13,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 04:46:13,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-12-22 04:46:13,194 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 17 states. [2020-12-22 04:46:14,071 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 26 [2020-12-22 04:46:14,540 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 29 [2020-12-22 04:46:15,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:46:15,747 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2020-12-22 04:46:15,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 04:46:15,748 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-12-22 04:46:15,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:46:15,749 INFO L225 Difference]: With dead ends: 45 [2020-12-22 04:46:15,749 INFO L226 Difference]: Without dead ends: 35 [2020-12-22 04:46:15,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=148, Invalid=554, Unknown=0, NotChecked=0, Total=702 [2020-12-22 04:46:15,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-22 04:46:15,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 15. [2020-12-22 04:46:15,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-22 04:46:15,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-12-22 04:46:15,754 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 14 [2020-12-22 04:46:15,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:46:15,755 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-12-22 04:46:15,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 04:46:15,755 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-12-22 04:46:15,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 04:46:15,755 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:46:15,755 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:46:15,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:46:15,960 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:46:15,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:46:15,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1728071361, now seen corresponding path program 2 times [2020-12-22 04:46:15,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:46:15,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703870199] [2020-12-22 04:46:15,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:46:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:46:16,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:46:16,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703870199] [2020-12-22 04:46:16,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687107660] [2020-12-22 04:46:16,190 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 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 04:46:16,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:46:16,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:46:16,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 04:46:16,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:46:16,355 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 04:46:17,444 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:46:17,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 04:46:17,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-12-22 04:46:17,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632444156] [2020-12-22 04:46:17,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 04:46:17,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:46:17,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 04:46:17,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-22 04:46:17,447 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 10 states. [2020-12-22 04:46:17,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:46:17,587 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2020-12-22 04:46:17,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 04:46:17,588 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-12-22 04:46:17,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:46:17,589 INFO L225 Difference]: With dead ends: 25 [2020-12-22 04:46:17,589 INFO L226 Difference]: Without dead ends: 16 [2020-12-22 04:46:17,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-12-22 04:46:17,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-22 04:46:17,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-22 04:46:17,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-22 04:46:17,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-12-22 04:46:17,593 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 14 [2020-12-22 04:46:17,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:46:17,594 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-12-22 04:46:17,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 04:46:17,594 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-12-22 04:46:17,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 04:46:17,594 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:46:17,595 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:46:17,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:46:17,799 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:46:17,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:46:17,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1606402439, now seen corresponding path program 3 times [2020-12-22 04:46:17,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:46:17,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108285231] [2020-12-22 04:46:17,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:46:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:46:17,995 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:46:17,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108285231] [2020-12-22 04:46:17,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675071569] [2020-12-22 04:46:17,996 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 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 [2020-12-22 04:46:18,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 04:46:18,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:46:18,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 04:46:18,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:46:18,246 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 04:46:18,252 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 04:46:18,256 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 04:46:18,274 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 04:46:18,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:46:18,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2020-12-22 04:46:18,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835870854] [2020-12-22 04:46:18,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:46:18,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:46:18,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:46:18,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-12-22 04:46:18,277 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 6 states. [2020-12-22 04:46:18,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:46:18,297 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-12-22 04:46:18,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 04:46:18,298 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-22 04:46:18,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:46:18,298 INFO L225 Difference]: With dead ends: 16 [2020-12-22 04:46:18,298 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 04:46:18,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-12-22 04:46:18,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 04:46:18,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 04:46:18,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 04:46:18,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 04:46:18,300 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-22 04:46:18,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:46:18,300 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 04:46:18,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:46:18,300 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 04:46:18,300 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 04:46:18,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 04:46:18,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 04:46:19,290 WARN L197 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 41 [2020-12-22 04:46:19,625 WARN L197 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 35 [2020-12-22 04:46:19,704 INFO L189 CegarLoopUtils]: For program point L19(line 19) no Hoare annotation was computed. [2020-12-22 04:46:19,704 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-22 04:46:19,704 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-22 04:46:19,704 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-22 04:46:19,704 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2020-12-22 04:46:19,704 INFO L192 CegarLoopUtils]: At program point L33(lines 16 34) the Hoare annotation is: true [2020-12-22 04:46:19,705 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-22 04:46:19,705 INFO L185 CegarLoopUtils]: At program point L29-2(lines 29 31) the Hoare annotation is: (let ((.cse6 (mod ULTIMATE.start_main_~n~0 4294967296))) (let ((.cse4 (= (mod ULTIMATE.start_main_~i~0 4294967296) ULTIMATE.start_main_~j~0)) (.cse1 (= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~j~0)) (.cse2 (<= 20000001 ~SIZE~0)) (.cse5 (<= .cse6 (mod ULTIMATE.start_main_~k~0 4294967296))) (.cse3 (<= ~SIZE~0 20000001))) (or (let ((.cse0 (div ULTIMATE.start_main_~i~0 4294967296))) (and (<= (+ (* 4294967296 .cse0) ULTIMATE.start_main_~n~0) (+ (* 4294967296 (div ULTIMATE.start_main_~n~0 4294967296)) ULTIMATE.start_main_~i~0)) (= ULTIMATE.start_main_~i~0 0) (= ULTIMATE.start_main_~i~0 (+ (* .cse0 4294967296) ULTIMATE.start_main_~j~0)) .cse1 .cse2 .cse3)) (and .cse4 .cse1 .cse2 (= ULTIMATE.start_main_~i~0 2) .cse3 .cse5) (and (<= .cse6 (mod ~SIZE~0 4294967296)) .cse4 (< (mod (+ ULTIMATE.start_main_~i~0 4294967295) 4294967296) .cse6) .cse1 .cse2 .cse5 .cse3)))) [2020-12-22 04:46:19,705 INFO L189 CegarLoopUtils]: For program point L29-3(lines 29 31) no Hoare annotation was computed. [2020-12-22 04:46:19,705 INFO L185 CegarLoopUtils]: At program point L25-2(lines 25 27) the Hoare annotation is: (let ((.cse2 (<= 20000001 ~SIZE~0)) (.cse3 (<= ~SIZE~0 20000001))) (or (let ((.cse0 (mod ULTIMATE.start_main_~n~0 4294967296)) (.cse1 (mod ULTIMATE.start_main_~i~0 4294967296))) (and (<= .cse0 (mod ~SIZE~0 4294967296)) (= .cse1 ULTIMATE.start_main_~j~0) (< (mod (+ ULTIMATE.start_main_~i~0 4294967295) 4294967296) .cse0) .cse2 (<= .cse0 .cse1) .cse3)) (let ((.cse4 (div ULTIMATE.start_main_~i~0 4294967296))) (and (<= (+ (* 4294967296 .cse4) ULTIMATE.start_main_~n~0) (+ (* 4294967296 (div ULTIMATE.start_main_~n~0 4294967296)) ULTIMATE.start_main_~i~0)) (= ULTIMATE.start_main_~i~0 0) (= ULTIMATE.start_main_~i~0 (+ (* .cse4 4294967296) ULTIMATE.start_main_~j~0)) .cse2 .cse3)))) [2020-12-22 04:46:19,705 INFO L189 CegarLoopUtils]: For program point L25-3(lines 25 27) no Hoare annotation was computed. [2020-12-22 04:46:19,705 INFO L185 CegarLoopUtils]: At program point L21-2(lines 21 23) the Hoare annotation is: (let ((.cse0 (<= 20000001 ~SIZE~0)) (.cse1 (<= ~SIZE~0 20000001))) (or (and (= ULTIMATE.start_main_~i~0 0) .cse0 (<= (+ ULTIMATE.start_main_~n~0 (* 4294967296 (div ~SIZE~0 4294967296))) (+ (* 4294967296 (div ULTIMATE.start_main_~n~0 4294967296)) 20000001)) .cse1) (let ((.cse2 (mod ULTIMATE.start_main_~n~0 4294967296))) (and (<= .cse2 (mod ~SIZE~0 4294967296)) (< (mod (+ ULTIMATE.start_main_~i~0 4294967295) 4294967296) .cse2) .cse0 .cse1)))) [2020-12-22 04:46:19,705 INFO L189 CegarLoopUtils]: For program point L21-3(lines 21 23) no Hoare annotation was computed. [2020-12-22 04:46:19,705 INFO L189 CegarLoopUtils]: For program point L9(lines 9 11) no Hoare annotation was computed. [2020-12-22 04:46:19,706 INFO L192 CegarLoopUtils]: At program point L9-2(lines 8 13) the Hoare annotation is: true [2020-12-22 04:46:19,706 INFO L189 CegarLoopUtils]: For program point L10(line 10) no Hoare annotation was computed. [2020-12-22 04:46:19,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 04:46:19 BoogieIcfgContainer [2020-12-22 04:46:19,728 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 04:46:19,728 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 04:46:19,728 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 04:46:19,729 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 04:46:19,729 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:45:40" (3/4) ... [2020-12-22 04:46:19,732 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 04:46:19,743 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-22 04:46:19,744 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 04:46:19,744 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 04:46:19,744 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 04:46:19,791 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loops-crafted-1/sum_by_3.c-witness.graphml [2020-12-22 04:46:19,792 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 04:46:19,794 INFO L168 Benchmark]: Toolchain (without parser) took 39798.74 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 125.9 MB in the beginning and 158.5 MB in the end (delta: -32.6 MB). Peak memory consumption was 78.9 MB. Max. memory is 8.0 GB. [2020-12-22 04:46:19,795 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:46:19,795 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.10 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 116.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 04:46:19,796 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.94 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 04:46:19,798 INFO L168 Benchmark]: Boogie Preprocessor took 26.78 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 113.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:46:19,799 INFO L168 Benchmark]: RCFGBuilder took 435.74 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 100.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-22 04:46:19,801 INFO L168 Benchmark]: TraceAbstraction took 38956.50 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 100.5 MB in the beginning and 161.2 MB in the end (delta: -60.6 MB). Peak memory consumption was 127.2 MB. Max. memory is 8.0 GB. [2020-12-22 04:46:19,802 INFO L168 Benchmark]: Witness Printer took 63.64 ms. Allocated memory is still 262.1 MB. Free memory was 161.2 MB in the beginning and 158.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 04:46:19,806 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 266.10 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 116.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 40.94 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 26.78 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 113.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 435.74 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 100.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 38956.50 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 100.5 MB in the beginning and 161.2 MB in the end (delta: -60.6 MB). Peak memory consumption was 127.2 MB. Max. memory is 8.0 GB. * Witness Printer took 63.64 ms. Allocated memory is still 262.1 MB. Free memory was 161.2 MB in the beginning and 158.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: ((((((4294967296 * (i / 4294967296) + n <= 4294967296 * (n / 4294967296) + i && i == 0) && i == i / 4294967296 * 4294967296 + j) && k == j) && 20000001 <= SIZE) && SIZE <= 20000001) || (((((i % 4294967296 == j && k == j) && 20000001 <= SIZE) && i == 2) && SIZE <= 20000001) && n % 4294967296 <= k % 4294967296)) || ((((((n % 4294967296 <= SIZE % 4294967296 && i % 4294967296 == j) && (i + 4294967295) % 4294967296 < n % 4294967296) && k == j) && 20000001 <= SIZE) && n % 4294967296 <= k % 4294967296) && SIZE <= 20000001) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (((((n % 4294967296 <= SIZE % 4294967296 && i % 4294967296 == j) && (i + 4294967295) % 4294967296 < n % 4294967296) && 20000001 <= SIZE) && n % 4294967296 <= i % 4294967296) && SIZE <= 20000001) || ((((4294967296 * (i / 4294967296) + n <= 4294967296 * (n / 4294967296) + i && i == 0) && i == i / 4294967296 * 4294967296 + j) && 20000001 <= SIZE) && SIZE <= 20000001) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (((i == 0 && 20000001 <= SIZE) && n + 4294967296 * (SIZE / 4294967296) <= 4294967296 * (n / 4294967296) + 20000001) && SIZE <= 20000001) || (((n % 4294967296 <= SIZE % 4294967296 && (i + 4294967295) % 4294967296 < n % 4294967296) && 20000001 <= SIZE) && SIZE <= 20000001) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 37.6s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 93 SDtfs, 354 SDslu, 221 SDs, 0 SdLazy, 737 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 186 GetRequests, 71 SyntacticMatches, 8 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 10 MinimizatonAttempts, 87 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 18 NumberOfFragments, 222 HoareAnnotationTreeSize, 5 FomulaSimplifications, 4962 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 1320 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 17.6s SatisfiabilityAnalysisTime, 13.2s InterpolantComputationTime, 222 NumberOfCodeBlocks, 220 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 205 ConstructedInterpolants, 0 QuantifiedInterpolants, 38757 SizeOfPredicates, 24 NumberOfNonLiveVariables, 409 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 19/51 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...