/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 --traceabstraction.trace.refinement.strategy CAMEL_NO_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/hhk2008.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 21:47:06,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 21:47:06,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 21:47:06,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 21:47:06,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 21:47:06,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 21:47:06,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 21:47:06,096 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 21:47:06,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 21:47:06,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 21:47:06,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 21:47:06,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 21:47:06,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 21:47:06,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 21:47:06,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 21:47:06,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 21:47:06,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 21:47:06,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 21:47:06,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 21:47:06,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 21:47:06,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 21:47:06,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 21:47:06,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 21:47:06,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 21:47:06,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 21:47:06,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 21:47:06,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 21:47:06,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 21:47:06,154 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 [2020-07-19 21:47:06,187 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 21:47:06,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 21:47:06,195 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 21:47:06,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 21:47:06,195 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 21:47:06,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 21:47:06,196 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 21:47:06,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 21:47:06,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 21:47:06,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 21:47:06,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 21:47:06,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 21:47:06,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 21:47:06,197 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 21:47:06,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 21:47:06,197 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 21:47:06,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 21:47:06,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 21:47:06,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 21:47:06,198 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 21:47:06,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 21:47:06,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:47:06,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 21:47:06,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 21:47:06,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 21:47:06,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 21:47:06,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 21:47:06,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 21:47:06,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 21:47:06,200 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_NO_AM [2020-07-19 21:47:06,471 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 21:47:06,487 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 21:47:06,491 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 21:47:06,493 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 21:47:06,496 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 21:47:06,496 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/hhk2008.i [2020-07-19 21:47:06,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b02fe2484/ea0cf5ff57da4205b74ae9e235b8e2ae/FLAG7043dc40b [2020-07-19 21:47:07,055 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 21:47:07,056 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/hhk2008.i [2020-07-19 21:47:07,062 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b02fe2484/ea0cf5ff57da4205b74ae9e235b8e2ae/FLAG7043dc40b [2020-07-19 21:47:07,444 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b02fe2484/ea0cf5ff57da4205b74ae9e235b8e2ae [2020-07-19 21:47:07,453 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 21:47:07,455 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 21:47:07,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 21:47:07,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 21:47:07,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 21:47:07,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:47:07" (1/1) ... [2020-07-19 21:47:07,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b15a6b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:07, skipping insertion in model container [2020-07-19 21:47:07,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:47:07" (1/1) ... [2020-07-19 21:47:07,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 21:47:07,489 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 21:47:07,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:47:07,647 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 21:47:07,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:47:07,679 INFO L208 MainTranslator]: Completed translation [2020-07-19 21:47:07,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:07 WrapperNode [2020-07-19 21:47:07,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 21:47:07,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 21:47:07,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 21:47:07,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 21:47:07,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:07" (1/1) ... [2020-07-19 21:47:07,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:07" (1/1) ... [2020-07-19 21:47:07,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:07" (1/1) ... [2020-07-19 21:47:07,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:07" (1/1) ... [2020-07-19 21:47:07,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:07" (1/1) ... [2020-07-19 21:47:07,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:07" (1/1) ... [2020-07-19 21:47:07,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:07" (1/1) ... [2020-07-19 21:47:07,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 21:47:07,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 21:47:07,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 21:47:07,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 21:47:07,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:07" (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 [2020-07-19 21:47:07,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 21:47:07,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 21:47:07,872 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-19 21:47:07,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-19 21:47:07,872 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 21:47:07,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 21:47:07,873 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 21:47:07,873 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-19 21:47:07,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-19 21:47:07,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 21:47:07,873 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 21:47:07,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 21:47:07,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 21:47:08,074 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 21:47:08,074 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-19 21:47:08,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:47:08 BoogieIcfgContainer [2020-07-19 21:47:08,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 21:47:08,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 21:47:08,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 21:47:08,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 21:47:08,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:47:07" (1/3) ... [2020-07-19 21:47:08,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d0a1d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:47:08, skipping insertion in model container [2020-07-19 21:47:08,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:47:07" (2/3) ... [2020-07-19 21:47:08,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d0a1d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:47:08, skipping insertion in model container [2020-07-19 21:47:08,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:47:08" (3/3) ... [2020-07-19 21:47:08,087 INFO L109 eAbstractionObserver]: Analyzing ICFG hhk2008.i [2020-07-19 21:47:08,098 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 21:47:08,106 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 21:47:08,122 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 21:47:08,175 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 21:47:08,176 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 21:47:08,176 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 21:47:08,176 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 21:47:08,176 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 21:47:08,177 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 21:47:08,177 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 21:47:08,177 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 21:47:08,199 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-19 21:47:08,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-19 21:47:08,207 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:47:08,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:47:08,209 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:47:08,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:47:08,216 INFO L82 PathProgramCache]: Analyzing trace with hash -677001103, now seen corresponding path program 1 times [2020-07-19 21:47:08,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:47:08,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123164846] [2020-07-19 21:47:08,227 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@408fe52b [2020-07-19 21:47:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:47:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:47:08,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:47:08,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123164846] [2020-07-19 21:47:08,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:47:08,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-19 21:47:08,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23291483] [2020-07-19 21:47:08,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-19 21:47:08,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:47:08,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-19 21:47:08,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-19 21:47:08,555 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 6 states. [2020-07-19 21:47:08,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:47:08,711 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2020-07-19 21:47:08,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-19 21:47:08,713 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-07-19 21:47:08,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:47:08,721 INFO L225 Difference]: With dead ends: 41 [2020-07-19 21:47:08,721 INFO L226 Difference]: Without dead ends: 14 [2020-07-19 21:47:08,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-19 21:47:08,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-19 21:47:08,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-19 21:47:08,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-19 21:47:08,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-07-19 21:47:08,763 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-07-19 21:47:08,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:47:08,763 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-07-19 21:47:08,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-19 21:47:08,764 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-07-19 21:47:08,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-19 21:47:08,765 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:47:08,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:47:08,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 21:47:08,766 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:47:08,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:47:08,766 INFO L82 PathProgramCache]: Analyzing trace with hash 523340046, now seen corresponding path program 1 times [2020-07-19 21:47:08,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:47:08,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214948117] [2020-07-19 21:47:08,768 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@408fe52b [2020-07-19 21:47:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:47:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:47:08,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:47:08,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214948117] [2020-07-19 21:47:08,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012910449] [2020-07-19 21:47:08,918 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@408fe52b 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 [2020-07-19 21:47:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:47:08,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-19 21:47:08,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 21:47:09,113 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-19 21:47:09,134 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-19 21:47:09,145 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-19 21:47:09,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:47:09,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 21:47:09,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-07-19 21:47:09,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039861599] [2020-07-19 21:47:09,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-19 21:47:09,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:47:09,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-19 21:47:09,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-07-19 21:47:09,186 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 11 states. [2020-07-19 21:47:09,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:47:09,298 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-07-19 21:47:09,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-19 21:47:09,299 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-07-19 21:47:09,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:47:09,300 INFO L225 Difference]: With dead ends: 20 [2020-07-19 21:47:09,300 INFO L226 Difference]: Without dead ends: 15 [2020-07-19 21:47:09,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-07-19 21:47:09,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-19 21:47:09,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-19 21:47:09,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-19 21:47:09,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-07-19 21:47:09,307 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2020-07-19 21:47:09,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:47:09,308 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-07-19 21:47:09,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-19 21:47:09,308 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-07-19 21:47:09,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-19 21:47:09,309 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:47:09,309 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:47:09,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-19 21:47:09,522 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:47:09,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:47:09,523 INFO L82 PathProgramCache]: Analyzing trace with hash -920789999, now seen corresponding path program 2 times [2020-07-19 21:47:09,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:47:09,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713553380] [2020-07-19 21:47:09,525 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@408fe52b [2020-07-19 21:47:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:47:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:47:09,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:47:09,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713553380] [2020-07-19 21:47:09,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651872571] [2020-07-19 21:47:09,712 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@408fe52b 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) [2020-07-19 21:47:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:47:09,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-19 21:47:09,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:47:09,845 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-19 21:47:09,850 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-19 21:47:09,856 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-19 21:47:09,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:47:09,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 21:47:09,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2020-07-19 21:47:09,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054135344] [2020-07-19 21:47:09,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-19 21:47:09,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:47:09,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-19 21:47:09,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-07-19 21:47:09,892 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 13 states. [2020-07-19 21:47:10,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:47:10,103 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-07-19 21:47:10,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-19 21:47:10,104 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2020-07-19 21:47:10,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:47:10,105 INFO L225 Difference]: With dead ends: 17 [2020-07-19 21:47:10,105 INFO L226 Difference]: Without dead ends: 0 [2020-07-19 21:47:10,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2020-07-19 21:47:10,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-19 21:47:10,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-19 21:47:10,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-19 21:47:10,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-19 21:47:10,108 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-07-19 21:47:10,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:47:10,108 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-19 21:47:10,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-19 21:47:10,110 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-19 21:47:10,110 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-19 21:47:10,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:47:10,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-19 21:47:10,448 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-19 21:47:10,448 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-19 21:47:10,449 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-19 21:47:10,449 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-19 21:47:10,449 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-19 21:47:10,449 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-19 21:47:10,449 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-19 21:47:10,449 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-19 21:47:10,450 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-19 21:47:10,450 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-19 21:47:10,450 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 27) the Hoare annotation is: true [2020-07-19 21:47:10,450 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-19 21:47:10,450 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 27) no Hoare annotation was computed. [2020-07-19 21:47:10,450 INFO L264 CegarLoopResult]: At program point L21-2(lines 21 24) the Hoare annotation is: (let ((.cse1 (+ main_~res~0 main_~cnt~0)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (<= main_~res~0 .cse0) (<= .cse1 .cse0))) [2020-07-19 21:47:10,451 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-07-19 21:47:10,451 INFO L264 CegarLoopResult]: At program point L21-3(lines 21 24) the Hoare annotation is: (let ((.cse1 (+ main_~a~0 main_~b~0))) (let ((.cse3 (<= .cse1 main_~res~0)) (.cse4 (<= main_~res~0 .cse1))) (or (let ((.cse0 (+ main_~a~0 1))) (and (<= .cse0 main_~res~0) (<= main_~b~0 1) (<= main_~b~0 (+ main_~cnt~0 1)) (<= main_~res~0 .cse0) (< 0 main_~b~0))) (let ((.cse2 (+ main_~res~0 main_~cnt~0))) (and (<= .cse1 .cse2) .cse3 .cse4 (<= .cse2 .cse1))) (and .cse3 .cse4 (= main_~cnt~0 main_~b~0))))) [2020-07-19 21:47:10,451 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-07-19 21:47:10,451 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 27) no Hoare annotation was computed. [2020-07-19 21:47:10,451 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-19 21:47:10,452 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-19 21:47:10,452 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-19 21:47:10,452 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-19 21:47:10,452 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-19 21:47:10,452 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-19 21:47:10,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:47:10 BoogieIcfgContainer [2020-07-19 21:47:10,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 21:47:10,473 INFO L168 Benchmark]: Toolchain (without parser) took 3017.69 ms. Allocated memory was 146.8 MB in the beginning and 233.3 MB in the end (delta: 86.5 MB). Free memory was 103.6 MB in the beginning and 122.7 MB in the end (delta: -19.2 MB). Peak memory consumption was 67.3 MB. Max. memory is 7.1 GB. [2020-07-19 21:47:10,474 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 146.8 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-19 21:47:10,475 INFO L168 Benchmark]: CACSL2BoogieTranslator took 223.96 ms. Allocated memory is still 146.8 MB. Free memory was 103.1 MB in the beginning and 93.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-19 21:47:10,476 INFO L168 Benchmark]: Boogie Preprocessor took 126.79 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 93.6 MB in the beginning and 184.6 MB in the end (delta: -91.0 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-07-19 21:47:10,477 INFO L168 Benchmark]: RCFGBuilder took 270.53 ms. Allocated memory is still 204.5 MB. Free memory was 183.7 MB in the beginning and 171.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-07-19 21:47:10,479 INFO L168 Benchmark]: TraceAbstraction took 2390.41 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 171.2 MB in the beginning and 122.7 MB in the end (delta: 48.4 MB). Peak memory consumption was 77.3 MB. Max. memory is 7.1 GB. [2020-07-19 21:47:10,483 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 146.8 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 223.96 ms. Allocated memory is still 146.8 MB. Free memory was 103.1 MB in the beginning and 93.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.79 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 93.6 MB in the beginning and 184.6 MB in the end (delta: -91.0 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 270.53 ms. Allocated memory is still 204.5 MB. Free memory was 183.7 MB in the beginning and 171.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2390.41 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 171.2 MB in the beginning and 122.7 MB in the end (delta: 48.4 MB). Peak memory consumption was 77.3 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: 21]: Loop Invariant Derived loop invariant: (a + b <= res + cnt && res <= a + b) && res + cnt <= a + b - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 38 SDtfs, 22 SDslu, 129 SDs, 0 SdLazy, 100 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 18 NumberOfFragments, 87 HoareAnnotationTreeSize, 11 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 90 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 3737 SizeOfPredicates, 6 NumberOfNonLiveVariables, 85 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/8 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...