/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-lit/cggmp2005_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 14:01:23,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 14:01:23,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 14:01:23,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 14:01:23,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 14:01:23,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 14:01:23,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 14:01:23,549 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 14:01:23,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 14:01:23,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 14:01:23,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 14:01:23,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 14:01:23,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 14:01:23,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 14:01:23,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 14:01:23,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 14:01:23,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 14:01:23,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 14:01:23,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 14:01:23,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 14:01:23,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 14:01:23,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 14:01:23,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 14:01:23,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 14:01:23,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 14:01:23,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 14:01:23,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 14:01:23,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 14:01:23,600 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 14:01:23,631 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 14:01:23,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 14:01:23,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 14:01:23,633 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 14:01:23,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 14:01:23,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 14:01:23,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 14:01:23,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 14:01:23,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 14:01:23,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 14:01:23,636 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 14:01:23,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 14:01:23,637 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 14:01:23,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 14:01:23,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 14:01:23,637 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 14:01:23,637 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 14:01:23,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 14:01:23,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 14:01:23,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 14:01:23,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 14:01:23,641 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 14:01:23,641 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 14:01:23,962 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 14:01:23,976 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 14:01:23,980 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 14:01:23,982 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 14:01:23,982 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 14:01:23,983 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005_variant.i [2020-07-07 14:01:24,063 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61826c4c1/be404f7658a94ba9b6ebccdad70b3331/FLAGc16feb278 [2020-07-07 14:01:24,531 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 14:01:24,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005_variant.i [2020-07-07 14:01:24,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61826c4c1/be404f7658a94ba9b6ebccdad70b3331/FLAGc16feb278 [2020-07-07 14:01:24,905 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61826c4c1/be404f7658a94ba9b6ebccdad70b3331 [2020-07-07 14:01:24,916 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 14:01:24,918 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 14:01:24,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 14:01:24,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 14:01:24,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 14:01:24,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 02:01:24" (1/1) ... [2020-07-07 14:01:24,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c7518a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:24, skipping insertion in model container [2020-07-07 14:01:24,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 02:01:24" (1/1) ... [2020-07-07 14:01:24,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 14:01:24,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 14:01:25,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 14:01:25,151 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 14:01:25,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 14:01:25,189 INFO L208 MainTranslator]: Completed translation [2020-07-07 14:01:25,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:25 WrapperNode [2020-07-07 14:01:25,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 14:01:25,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 14:01:25,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 14:01:25,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 14:01:25,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:25" (1/1) ... [2020-07-07 14:01:25,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:25" (1/1) ... [2020-07-07 14:01:25,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:25" (1/1) ... [2020-07-07 14:01:25,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:25" (1/1) ... [2020-07-07 14:01:25,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:25" (1/1) ... [2020-07-07 14:01:25,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:25" (1/1) ... [2020-07-07 14:01:25,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:25" (1/1) ... [2020-07-07 14:01:25,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 14:01:25,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 14:01:25,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 14:01:25,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 14:01:25,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:25" (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 [2020-07-07 14:01:25,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 14:01:25,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 14:01:25,379 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 14:01:25,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 14:01:25,380 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 14:01:25,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 14:01:25,380 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 14:01:25,380 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 14:01:25,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 14:01:25,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 14:01:25,380 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 14:01:25,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 14:01:25,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 14:01:25,581 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 14:01:25,581 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 14:01:25,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 02:01:25 BoogieIcfgContainer [2020-07-07 14:01:25,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 14:01:25,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 14:01:25,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 14:01:25,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 14:01:25,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 02:01:24" (1/3) ... [2020-07-07 14:01:25,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8963f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 02:01:25, skipping insertion in model container [2020-07-07 14:01:25,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:25" (2/3) ... [2020-07-07 14:01:25,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8963f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 02:01:25, skipping insertion in model container [2020-07-07 14:01:25,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 02:01:25" (3/3) ... [2020-07-07 14:01:25,595 INFO L109 eAbstractionObserver]: Analyzing ICFG cggmp2005_variant.i [2020-07-07 14:01:25,607 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 14:01:25,616 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 14:01:25,633 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 14:01:25,663 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 14:01:25,663 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 14:01:25,663 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 14:01:25,663 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 14:01:25,663 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 14:01:25,664 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 14:01:25,664 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 14:01:25,664 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 14:01:25,686 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-07-07 14:01:25,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-07 14:01:25,702 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:25,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:01:25,704 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:25,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:25,719 INFO L82 PathProgramCache]: Analyzing trace with hash 627729613, now seen corresponding path program 1 times [2020-07-07 14:01:25,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:25,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264825474] [2020-07-07 14:01:25,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:25,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:01:25,974 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:25,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264825474] [2020-07-07 14:01:25,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:25,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 14:01:25,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678058157] [2020-07-07 14:01:25,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 14:01:25,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:26,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 14:01:26,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 14:01:26,006 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 3 states. [2020-07-07 14:01:26,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:26,061 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2020-07-07 14:01:26,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 14:01:26,063 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-07-07 14:01:26,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:26,073 INFO L225 Difference]: With dead ends: 43 [2020-07-07 14:01:26,074 INFO L226 Difference]: Without dead ends: 23 [2020-07-07 14:01:26,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 14:01:26,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-07 14:01:26,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-07-07 14:01:26,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-07 14:01:26,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-07-07 14:01:26,125 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2020-07-07 14:01:26,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:26,125 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-07-07 14:01:26,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 14:01:26,126 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-07-07 14:01:26,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-07 14:01:26,127 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:26,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:01:26,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 14:01:26,128 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:26,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:26,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1623753589, now seen corresponding path program 1 times [2020-07-07 14:01:26,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:26,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744144224] [2020-07-07 14:01:26,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Garbage collection #1: 11 nodes / 0 free / 0.001s / 0.001s total Resizing node table from 11 to 19 Garbage collection #2: 19 nodes / 0 free / 0.0s / 0.001s total Resizing node table from 19 to 37 Garbage collection #3: 37 nodes / 0 free / 0.0s / 0.001s total Resizing node table from 37 to 73 [2020-07-07 14:01:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:28,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:01:28,866 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:28,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744144224] [2020-07-07 14:01:28,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:28,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-07 14:01:28,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950459051] [2020-07-07 14:01:28,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 14:01:28,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:28,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 14:01:28,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-07-07 14:01:28,891 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 11 states. [2020-07-07 14:01:29,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:29,042 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-07-07 14:01:29,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 14:01:29,042 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2020-07-07 14:01:29,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:29,043 INFO L225 Difference]: With dead ends: 24 [2020-07-07 14:01:29,043 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 14:01:29,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-07-07 14:01:29,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 14:01:29,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 14:01:29,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 14:01:29,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 14:01:29,047 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-07-07 14:01:29,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:29,048 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 14:01:29,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 14:01:29,048 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 14:01:29,048 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 14:01:29,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 14:01:29,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 14:01:29,243 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-07 14:01:29,243 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-07 14:01:29,243 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-07 14:01:29,243 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 14:01:29,244 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 14:01:29,244 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-07 14:01:29,244 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-07-07 14:01:29,244 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-07 14:01:29,244 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-07 14:01:29,245 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-07-07 14:01:29,245 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-07 14:01:29,245 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 13 26) the Hoare annotation is: true [2020-07-07 14:01:29,245 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (let ((.cse1 (+ (* 2 main_~mid~0) main_~lo~0)) (.cse0 (+ main_~hi~0 1))) (and (< 0 main_~mid~0) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-07-07 14:01:29,245 INFO L264 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (and (<= main_~lo~0 0) (<= 0 main_~lo~0)) [2020-07-07 14:01:29,246 INFO L264 CegarLoopResult]: At program point L19-2(lines 19 23) the Hoare annotation is: (let ((.cse0 (+ (* 2 main_~mid~0) main_~lo~0))) (and (< 0 (+ main_~mid~0 1)) (<= main_~hi~0 .cse0) (<= .cse0 main_~hi~0))) [2020-07-07 14:01:29,246 INFO L271 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: true [2020-07-07 14:01:29,246 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 23) the Hoare annotation is: (let ((.cse0 (+ (* 2 main_~mid~0) main_~lo~0))) (and (< 0 (+ main_~mid~0 1)) (<= main_~hi~0 .cse0) (<= main_~mid~0 0) (<= .cse0 main_~hi~0))) [2020-07-07 14:01:29,247 INFO L271 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-07-07 14:01:29,247 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 13 26) the Hoare annotation is: true [2020-07-07 14:01:29,247 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 26) the Hoare annotation is: true [2020-07-07 14:01:29,248 INFO L271 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: true [2020-07-07 14:01:29,248 INFO L264 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (let ((.cse1 (+ main_~hi~0 2)) (.cse0 (+ (* 2 main_~mid~0) main_~lo~0))) (and (< 0 main_~mid~0) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-07-07 14:01:29,248 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (let ((.cse0 (+ (* 2 main_~mid~0) main_~lo~0))) (and (< 0 main_~mid~0) (<= main_~hi~0 .cse0) (<= .cse0 main_~hi~0))) [2020-07-07 14:01:29,248 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (< 0 main_~mid~0) (<= main_~lo~0 0) (<= 0 main_~lo~0)) [2020-07-07 14:01:29,249 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (and (<= main_~lo~0 0) (<= 0 main_~lo~0)) [2020-07-07 14:01:29,249 INFO L264 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: (and (<= main_~lo~0 0) (<= 0 main_~lo~0)) [2020-07-07 14:01:29,252 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-07-07 14:01:29,253 INFO L264 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: (and (<= main_~lo~0 0) (<= 0 main_~lo~0)) [2020-07-07 14:01:29,254 INFO L271 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: true [2020-07-07 14:01:29,254 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-07 14:01:29,259 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: true [2020-07-07 14:01:29,260 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-07 14:01:29,260 INFO L264 CegarLoopResult]: At program point L7(lines 7 9) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-07 14:01:29,260 INFO L271 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: true [2020-07-07 14:01:29,260 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-07 14:01:29,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 02:01:29 BoogieIcfgContainer [2020-07-07 14:01:29,300 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 14:01:29,305 INFO L168 Benchmark]: Toolchain (without parser) took 4384.66 ms. Allocated memory was 146.8 MB in the beginning and 233.8 MB in the end (delta: 87.0 MB). Free memory was 104.9 MB in the beginning and 168.2 MB in the end (delta: -63.4 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-07-07 14:01:29,308 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.8 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 14:01:29,310 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.98 ms. Allocated memory is still 146.8 MB. Free memory was 104.6 MB in the beginning and 95.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-07 14:01:29,312 INFO L168 Benchmark]: Boogie Preprocessor took 121.29 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 95.2 MB in the beginning and 183.8 MB in the end (delta: -88.6 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-07-07 14:01:29,314 INFO L168 Benchmark]: RCFGBuilder took 273.56 ms. Allocated memory is still 203.9 MB. Free memory was 183.8 MB in the beginning and 170.5 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-07-07 14:01:29,316 INFO L168 Benchmark]: TraceAbstraction took 3713.28 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 169.8 MB in the beginning and 168.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 31.5 MB. Max. memory is 7.1 GB. [2020-07-07 14:01:29,329 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 146.8 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 270.98 ms. Allocated memory is still 146.8 MB. Free memory was 104.6 MB in the beginning and 95.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.29 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 95.2 MB in the beginning and 183.8 MB in the end (delta: -88.6 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 273.56 ms. Allocated memory is still 203.9 MB. Free memory was 183.8 MB in the beginning and 170.5 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3713.28 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 169.8 MB in the beginning and 168.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 31.5 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: 19]: Loop Invariant Derived loop invariant: (0 < mid + 1 && hi <= 2 * mid + lo) && 2 * mid + lo <= hi - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 6]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 11 SDslu, 93 SDs, 0 SdLazy, 89 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 30 LocationsWithAnnotation, 36 PreInvPairs, 46 NumberOfFragments, 174 HoareAnnotationTreeSize, 36 FomulaSimplifications, 25 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 30 FomulaSimplificationsInter, 30 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...