/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/bhmr2007.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:57:56,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:57:56,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:57:56,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:57:56,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:57:56,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:57:56,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:57:56,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:57:56,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:57:56,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:57:56,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:57:56,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:57:56,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:57:56,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:57:56,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:57:56,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:57:56,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:57:56,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:57:56,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:57:56,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:57:56,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:57:56,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:57:56,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:57:56,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:57:56,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:57:56,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:57:56,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:57:56,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:57:56,297 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 16:57:56,345 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:57:56,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:57:56,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:57:56,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:57:56,351 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:57:56,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:57:56,351 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:57:56,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:57:56,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:57:56,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:57:56,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:57:56,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:57:56,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:57:56,354 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:57:56,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:57:56,356 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:57:56,356 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:57:56,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:57:56,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:57:56,357 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:57:56,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:57:56,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:57:56,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:57:56,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:57:56,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:57:56,358 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:57:56,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:57:56,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:57:56,359 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:57:56,359 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:57:56,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:57:56,692 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:57:56,695 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:57:56,697 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:57:56,697 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:57:56,698 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/bhmr2007.i [2020-08-22 16:57:56,770 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98fad27ad/2f686e4b6c2f4db1953d55f7f23f4205/FLAG215801a6f [2020-08-22 16:57:57,239 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:57:57,241 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/bhmr2007.i [2020-08-22 16:57:57,248 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98fad27ad/2f686e4b6c2f4db1953d55f7f23f4205/FLAG215801a6f [2020-08-22 16:57:57,618 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98fad27ad/2f686e4b6c2f4db1953d55f7f23f4205 [2020-08-22 16:57:57,626 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:57:57,628 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:57:57,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:57:57,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:57:57,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:57:57,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:57:57" (1/1) ... [2020-08-22 16:57:57,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b9c77e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:57, skipping insertion in model container [2020-08-22 16:57:57,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:57:57" (1/1) ... [2020-08-22 16:57:57,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:57:57,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:57:57,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:57:57,821 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:57:57,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:57:57,849 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:57:57,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:57 WrapperNode [2020-08-22 16:57:57,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:57:57,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:57:57,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:57:57,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:57:57,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:57" (1/1) ... [2020-08-22 16:57:57,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:57" (1/1) ... [2020-08-22 16:57:57,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:57" (1/1) ... [2020-08-22 16:57:57,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:57" (1/1) ... [2020-08-22 16:57:57,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:57" (1/1) ... [2020-08-22 16:57:57,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:57" (1/1) ... [2020-08-22 16:57:57,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:57" (1/1) ... [2020-08-22 16:57:57,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:57:57,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:57:57,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:57:57,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:57:57,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:57" (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 [2020-08-22 16:57:58,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:57:58,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:57:58,018 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 16:57:58,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 16:57:58,018 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:57:58,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:57:58,018 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 16:57:58,018 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 16:57:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 16:57:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:57:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:57:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:57:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:57:58,224 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:57:58,224 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 16:57:58,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:57:58 BoogieIcfgContainer [2020-08-22 16:57:58,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:57:58,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:57:58,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:57:58,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:57:58,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:57:57" (1/3) ... [2020-08-22 16:57:58,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24c0dd17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:57:58, skipping insertion in model container [2020-08-22 16:57:58,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:57" (2/3) ... [2020-08-22 16:57:58,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24c0dd17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:57:58, skipping insertion in model container [2020-08-22 16:57:58,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:57:58" (3/3) ... [2020-08-22 16:57:58,237 INFO L109 eAbstractionObserver]: Analyzing ICFG bhmr2007.i [2020-08-22 16:57:58,248 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:57:58,256 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:57:58,269 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:57:58,291 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:57:58,291 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:57:58,291 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:57:58,291 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:57:58,291 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:57:58,291 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:57:58,292 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:57:58,292 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:57:58,310 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-08-22 16:57:58,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-22 16:57:58,317 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:58,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:58,319 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:58,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:58,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1473011041, now seen corresponding path program 1 times [2020-08-22 16:57:58,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:58,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769990228] [2020-08-22 16:57:58,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:58,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:58,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:57:58,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769990228] [2020-08-22 16:57:58,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:57:58,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-08-22 16:57:58,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374721290] [2020-08-22 16:57:58,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-08-22 16:57:58,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:58,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-08-22 16:57:58,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-22 16:57:58,465 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-08-22 16:57:58,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:58,488 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-08-22 16:57:58,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-08-22 16:57:58,490 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-08-22 16:57:58,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:58,498 INFO L225 Difference]: With dead ends: 33 [2020-08-22 16:57:58,498 INFO L226 Difference]: Without dead ends: 14 [2020-08-22 16:57:58,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-22 16:57:58,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-08-22 16:57:58,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-08-22 16:57:58,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-08-22 16:57:58,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2020-08-22 16:57:58,535 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2020-08-22 16:57:58,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:58,535 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2020-08-22 16:57:58,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-08-22 16:57:58,535 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2020-08-22 16:57:58,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-22 16:57:58,536 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:58,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:58,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:57:58,537 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:58,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:58,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1462852310, now seen corresponding path program 1 times [2020-08-22 16:57:58,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:58,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471196713] [2020-08-22 16:57:58,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:58,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:58,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:57:58,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471196713] [2020-08-22 16:57:58,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:57:58,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 16:57:58,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276580866] [2020-08-22 16:57:58,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 16:57:58,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:58,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 16:57:58,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-22 16:57:58,853 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 7 states. [2020-08-22 16:57:58,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:58,985 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-08-22 16:57:58,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 16:57:58,985 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-08-22 16:57:58,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:58,988 INFO L225 Difference]: With dead ends: 21 [2020-08-22 16:57:58,988 INFO L226 Difference]: Without dead ends: 16 [2020-08-22 16:57:58,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-08-22 16:57:58,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-08-22 16:57:58,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-08-22 16:57:58,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-08-22 16:57:58,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-08-22 16:57:58,996 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2020-08-22 16:57:58,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:58,997 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-08-22 16:57:58,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 16:57:58,997 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-08-22 16:57:58,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-22 16:57:58,998 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:58,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:58,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:57:58,999 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:58,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:58,999 INFO L82 PathProgramCache]: Analyzing trace with hash 467761921, now seen corresponding path program 1 times [2020-08-22 16:57:59,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:59,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914919033] [2020-08-22 16:57:59,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:59,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:59,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:59,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:57:59,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914919033] [2020-08-22 16:57:59,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653571433] [2020-08-22 16:57:59,245 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 [2020-08-22 16:57:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:59,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 16 conjunts are in the unsatisfiable core [2020-08-22 16:57:59,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:57:59,498 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:57:59,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:57:59,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:57:59,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-08-22 16:57:59,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827669834] [2020-08-22 16:57:59,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 16:57:59,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:59,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 16:57:59,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-08-22 16:57:59,553 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 16 states. [2020-08-22 16:57:59,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:59,803 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2020-08-22 16:57:59,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 16:57:59,803 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 14 [2020-08-22 16:57:59,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:59,804 INFO L225 Difference]: With dead ends: 28 [2020-08-22 16:57:59,805 INFO L226 Difference]: Without dead ends: 22 [2020-08-22 16:57:59,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2020-08-22 16:57:59,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-08-22 16:57:59,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-08-22 16:57:59,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-22 16:57:59,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2020-08-22 16:57:59,816 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 14 [2020-08-22 16:57:59,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:59,816 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-08-22 16:57:59,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 16:57:59,817 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2020-08-22 16:57:59,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-22 16:57:59,818 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:59,818 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:00,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-08-22 16:58:00,034 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:00,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:00,035 INFO L82 PathProgramCache]: Analyzing trace with hash -798766796, now seen corresponding path program 1 times [2020-08-22 16:58:00,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:00,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652631515] [2020-08-22 16:58:00,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:00,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:00,231 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 16:58:00,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652631515] [2020-08-22 16:58:00,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696545708] [2020-08-22 16:58:00,232 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) [2020-08-22 16:58:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:58:00,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 22 conjunts are in the unsatisfiable core [2020-08-22 16:58:00,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:58:00,437 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:58:00,482 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:58:00,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:58:00,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2020-08-22 16:58:00,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907017768] [2020-08-22 16:58:00,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 16:58:00,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:00,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 16:58:00,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-08-22 16:58:00,488 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 19 states. [2020-08-22 16:58:00,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:00,965 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2020-08-22 16:58:00,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 16:58:00,965 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 17 [2020-08-22 16:58:00,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:00,966 INFO L225 Difference]: With dead ends: 28 [2020-08-22 16:58:00,967 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 16:58:00,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=142, Invalid=788, Unknown=0, NotChecked=0, Total=930 [2020-08-22 16:58:00,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 16:58:00,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 16:58:00,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 16:58:00,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 16:58:00,970 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-08-22 16:58:00,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:00,971 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 16:58:00,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 16:58:00,971 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 16:58:00,971 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 16:58:01,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:58:01,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 16:58:01,273 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 16:58:01,274 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 16:58:01,274 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 16:58:01,274 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 16:58:01,274 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 16:58:01,274 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 16:58:01,274 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-22 16:58:01,274 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-22 16:58:01,275 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-08-22 16:58:01,275 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-22 16:58:01,275 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 29) the Hoare annotation is: true [2020-08-22 16:58:01,275 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-08-22 16:58:01,275 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 29) no Hoare annotation was computed. [2020-08-22 16:58:01,275 INFO L268 CegarLoopResult]: For program point L18(lines 18 24) no Hoare annotation was computed. [2020-08-22 16:58:01,275 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-08-22 16:58:01,276 INFO L268 CegarLoopResult]: For program point L18-2(lines 18 24) no Hoare annotation was computed. [2020-08-22 16:58:01,276 INFO L264 CegarLoopResult]: At program point L17-2(lines 17 26) the Hoare annotation is: (let ((.cse0 (+ main_~a~0 main_~b~0)) (.cse1 (* 3 main_~i~0))) (and (<= .cse0 (* 3 main_~n~0)) (<= .cse1 .cse0) (<= .cse0 .cse1))) [2020-08-22 16:58:01,276 INFO L264 CegarLoopResult]: At program point L17-3(lines 17 26) the Hoare annotation is: (let ((.cse1 (* 3 main_~n~0)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-08-22 16:58:01,276 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 29) no Hoare annotation was computed. [2020-08-22 16:58:01,276 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-22 16:58:01,277 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-08-22 16:58:01,277 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-22 16:58:01,277 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-22 16:58:01,277 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-08-22 16:58:01,277 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-08-22 16:58:01,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:58:01 BoogieIcfgContainer [2020-08-22 16:58:01,294 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:58:01,297 INFO L168 Benchmark]: Toolchain (without parser) took 3668.21 ms. Allocated memory was 139.5 MB in the beginning and 246.4 MB in the end (delta: 107.0 MB). Free memory was 102.6 MB in the beginning and 172.8 MB in the end (delta: -70.1 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. [2020-08-22 16:58:01,298 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-22 16:58:01,299 INFO L168 Benchmark]: CACSL2BoogieTranslator took 221.07 ms. Allocated memory is still 139.5 MB. Free memory was 102.2 MB in the beginning and 92.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-08-22 16:58:01,300 INFO L168 Benchmark]: Boogie Preprocessor took 111.02 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 92.7 MB in the beginning and 180.3 MB in the end (delta: -87.6 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-08-22 16:58:01,301 INFO L168 Benchmark]: RCFGBuilder took 267.18 ms. Allocated memory is still 201.9 MB. Free memory was 180.3 MB in the beginning and 167.5 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-08-22 16:58:01,302 INFO L168 Benchmark]: TraceAbstraction took 3064.53 ms. Allocated memory was 201.9 MB in the beginning and 246.4 MB in the end (delta: 44.6 MB). Free memory was 166.5 MB in the beginning and 172.8 MB in the end (delta: -6.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:58:01,306 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 221.07 ms. Allocated memory is still 139.5 MB. Free memory was 102.2 MB in the beginning and 92.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.02 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 92.7 MB in the beginning and 180.3 MB in the end (delta: -87.6 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 267.18 ms. Allocated memory is still 201.9 MB. Free memory was 180.3 MB in the beginning and 167.5 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3064.53 ms. Allocated memory was 201.9 MB in the beginning and 246.4 MB in the end (delta: 44.6 MB). Free memory was 166.5 MB in the beginning and 172.8 MB in the end (delta: -6.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (a + b <= 3 * n && 3 * i <= a + b) && a + b <= 3 * i - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 25 SDslu, 158 SDs, 0 SdLazy, 297 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 22 NumberOfFragments, 42 HoareAnnotationTreeSize, 12 FomulaSimplifications, 127 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 137 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 7949 SizeOfPredicates, 6 NumberOfNonLiveVariables, 95 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 1/12 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...