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/nla-digbench/geo3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-0883e75 [2019-09-05 12:28:12,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-05 12:28:12,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-05 12:28:13,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-05 12:28:13,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-05 12:28:13,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-05 12:28:13,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-05 12:28:13,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-05 12:28:13,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-05 12:28:13,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-05 12:28:13,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-05 12:28:13,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-05 12:28:13,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-05 12:28:13,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-05 12:28:13,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-05 12:28:13,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-05 12:28:13,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-05 12:28:13,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-05 12:28:13,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-05 12:28:13,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-05 12:28:13,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-05 12:28:13,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-05 12:28:13,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-05 12:28:13,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-05 12:28:13,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-05 12:28:13,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-05 12:28:13,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-05 12:28:13,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-05 12:28:13,035 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 [2019-09-05 12:28:13,058 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-05 12:28:13,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-05 12:28:13,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-05 12:28:13,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-05 12:28:13,060 INFO L138 SettingsManager]: * Use SBE=true [2019-09-05 12:28:13,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-05 12:28:13,061 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-05 12:28:13,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-05 12:28:13,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-05 12:28:13,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-05 12:28:13,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-05 12:28:13,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-05 12:28:13,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-05 12:28:13,063 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-05 12:28:13,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-05 12:28:13,063 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-05 12:28:13,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-05 12:28:13,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-05 12:28:13,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-05 12:28:13,064 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-05 12:28:13,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-05 12:28:13,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-05 12:28:13,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-05 12:28:13,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-05 12:28:13,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-05 12:28:13,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-05 12:28:13,066 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-05 12:28:13,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-05 12:28:13,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-05 12:28:13,119 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-05 12:28:13,135 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-05 12:28:13,139 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-05 12:28:13,140 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-05 12:28:13,141 INFO L275 PluginConnector]: CDTParser initialized [2019-09-05 12:28:13,141 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo3.c [2019-09-05 12:28:13,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d7542d5f/c4c1ecbc9e9c462aad98cdfd91fecbe8/FLAG71490ec6a [2019-09-05 12:28:13,601 INFO L306 CDTParser]: Found 1 translation units. [2019-09-05 12:28:13,601 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo3.c [2019-09-05 12:28:13,608 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d7542d5f/c4c1ecbc9e9c462aad98cdfd91fecbe8/FLAG71490ec6a [2019-09-05 12:28:13,976 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d7542d5f/c4c1ecbc9e9c462aad98cdfd91fecbe8 [2019-09-05 12:28:13,992 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-05 12:28:13,994 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-05 12:28:13,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-05 12:28:13,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-05 12:28:14,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-05 12:28:14,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 12:28:13" (1/1) ... [2019-09-05 12:28:14,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dea0c8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:14, skipping insertion in model container [2019-09-05 12:28:14,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 12:28:13" (1/1) ... [2019-09-05 12:28:14,011 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-05 12:28:14,026 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-05 12:28:14,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 12:28:14,194 INFO L188 MainTranslator]: Completed pre-run [2019-09-05 12:28:14,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 12:28:14,222 INFO L192 MainTranslator]: Completed translation [2019-09-05 12:28:14,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:14 WrapperNode [2019-09-05 12:28:14,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-05 12:28:14,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-05 12:28:14,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-05 12:28:14,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-05 12:28:14,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:14" (1/1) ... [2019-09-05 12:28:14,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:14" (1/1) ... [2019-09-05 12:28:14,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:14" (1/1) ... [2019-09-05 12:28:14,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:14" (1/1) ... [2019-09-05 12:28:14,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:14" (1/1) ... [2019-09-05 12:28:14,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:14" (1/1) ... [2019-09-05 12:28:14,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:14" (1/1) ... [2019-09-05 12:28:14,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-05 12:28:14,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-05 12:28:14,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-05 12:28:14,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-05 12:28:14,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:14" (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 [2019-09-05 12:28:14,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-05 12:28:14,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-05 12:28:14,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-05 12:28:14,397 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-05 12:28:14,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-05 12:28:14,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-05 12:28:14,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-05 12:28:14,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-05 12:28:14,398 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-05 12:28:14,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-05 12:28:14,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-05 12:28:14,563 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-05 12:28:14,564 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-05 12:28:14,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 12:28:14 BoogieIcfgContainer [2019-09-05 12:28:14,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-05 12:28:14,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-05 12:28:14,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-05 12:28:14,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-05 12:28:14,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.09 12:28:13" (1/3) ... [2019-09-05 12:28:14,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac41a57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 12:28:14, skipping insertion in model container [2019-09-05 12:28:14,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:28:14" (2/3) ... [2019-09-05 12:28:14,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac41a57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 12:28:14, skipping insertion in model container [2019-09-05 12:28:14,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 12:28:14" (3/3) ... [2019-09-05 12:28:14,572 INFO L109 eAbstractionObserver]: Analyzing ICFG geo3.c [2019-09-05 12:28:14,582 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-05 12:28:14,590 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-05 12:28:14,606 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-05 12:28:14,633 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-05 12:28:14,633 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-05 12:28:14,634 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-05 12:28:14,634 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-05 12:28:14,634 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-05 12:28:14,634 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-05 12:28:14,634 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-05 12:28:14,634 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-05 12:28:14,635 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-05 12:28:14,651 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-09-05 12:28:14,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-05 12:28:14,656 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:28:14,657 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:28:14,659 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:28:14,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:28:14,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1712389503, now seen corresponding path program 1 times [2019-09-05 12:28:14,665 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 12:28:14,665 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 12:28:14,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:28:14,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:28:14,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:28:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 12:28:14,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 12:28:14,764 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 12:28:14,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-05 12:28:14,769 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-05 12:28:14,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-05 12:28:14,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 12:28:14,781 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-09-05 12:28:14,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:28:14,800 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2019-09-05 12:28:14,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-05 12:28:14,801 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-05 12:28:14,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:28:14,810 INFO L225 Difference]: With dead ends: 35 [2019-09-05 12:28:14,810 INFO L226 Difference]: Without dead ends: 15 [2019-09-05 12:28:14,813 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 12:28:14,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-09-05 12:28:14,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-09-05 12:28:14,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-09-05 12:28:14,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-09-05 12:28:14,854 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2019-09-05 12:28:14,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:28:14,855 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-09-05 12:28:14,855 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-05 12:28:14,855 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-09-05 12:28:14,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-05 12:28:14,856 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:28:14,856 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:28:14,856 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:28:14,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:28:14,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1704941753, now seen corresponding path program 1 times [2019-09-05 12:28:14,857 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 12:28:14,857 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 12:28:14,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:28:14,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:28:14,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:28:14,866 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 12:28:14,866 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 12:28:14,867 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2019-09-05 12:28:14,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:28:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 12:28:14,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-05 12:28:14,939 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 12:28:15,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 12:28:15,166 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 12:28:15,166 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-05 12:28:15,168 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-05 12:28:15,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-05 12:28:15,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-05 12:28:15,169 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2019-09-05 12:28:15,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:28:15,265 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-09-05 12:28:15,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-05 12:28:15,266 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-09-05 12:28:15,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:28:15,267 INFO L225 Difference]: With dead ends: 25 [2019-09-05 12:28:15,267 INFO L226 Difference]: Without dead ends: 22 [2019-09-05 12:28:15,269 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-05 12:28:15,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-09-05 12:28:15,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-09-05 12:28:15,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-09-05 12:28:15,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2019-09-05 12:28:15,276 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2019-09-05 12:28:15,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:28:15,277 INFO L475 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2019-09-05 12:28:15,277 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-05 12:28:15,277 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2019-09-05 12:28:15,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-05 12:28:15,279 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:28:15,279 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:28:15,280 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:28:15,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:28:15,281 INFO L82 PathProgramCache]: Analyzing trace with hash 241116926, now seen corresponding path program 1 times [2019-09-05 12:28:15,281 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 12:28:15,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 12:28:15,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:28:15,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:28:15,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:28:15,299 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 12:28:15,300 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 12:28:15,300 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-05 12:28:15,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:28:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 12:28:15,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 23 conjunts are in the unsatisfiable core [2019-09-05 12:28:15,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 12:28:15,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 12:28:15,432 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-05 12:28:15,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-09-05 12:28:15,433 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-05 12:28:15,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-05 12:28:15,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-09-05 12:28:15,434 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 8 states. [2019-09-05 12:28:15,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:28:15,552 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2019-09-05 12:28:15,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-05 12:28:15,552 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2019-09-05 12:28:15,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:28:15,554 INFO L225 Difference]: With dead ends: 32 [2019-09-05 12:28:15,554 INFO L226 Difference]: Without dead ends: 29 [2019-09-05 12:28:15,555 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-09-05 12:28:15,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-09-05 12:28:15,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-09-05 12:28:15,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-09-05 12:28:15,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2019-09-05 12:28:15,562 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 17 [2019-09-05 12:28:15,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:28:15,563 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2019-09-05 12:28:15,563 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-05 12:28:15,563 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2019-09-05 12:28:15,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-05 12:28:15,564 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:28:15,564 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:28:15,564 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:28:15,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:28:15,565 INFO L82 PathProgramCache]: Analyzing trace with hash 311210265, now seen corresponding path program 2 times [2019-09-05 12:28:15,565 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 12:28:15,565 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 12:28:15,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:28:15,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:28:15,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:28:15,571 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 12:28:15,572 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 12:28:15,572 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-05 12:28:15,587 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-05 12:28:15,611 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-05 12:28:15,611 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-05 12:28:15,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 32 conjunts are in the unsatisfiable core [2019-09-05 12:28:15,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 12:28:15,735 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-05 12:28:15,739 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-05 12:28:15,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-09-05 12:28:15,740 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-05 12:28:15,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-05 12:28:15,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-09-05 12:28:15,741 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 9 states. [2019-09-05 12:28:16,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:28:16,304 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2019-09-05 12:28:16,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-05 12:28:16,305 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2019-09-05 12:28:16,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:28:16,306 INFO L225 Difference]: With dead ends: 39 [2019-09-05 12:28:16,306 INFO L226 Difference]: Without dead ends: 36 [2019-09-05 12:28:16,307 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-09-05 12:28:16,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-09-05 12:28:16,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-09-05 12:28:16,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-09-05 12:28:16,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2019-09-05 12:28:16,315 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 24 [2019-09-05 12:28:16,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:28:16,315 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2019-09-05 12:28:16,315 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-05 12:28:16,316 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2019-09-05 12:28:16,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-09-05 12:28:16,317 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:28:16,317 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:28:16,317 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:28:16,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:28:16,318 INFO L82 PathProgramCache]: Analyzing trace with hash -928013666, now seen corresponding path program 3 times [2019-09-05 12:28:16,318 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 12:28:16,318 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 12:28:16,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:28:16,319 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-05 12:28:16,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:28:16,324 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-05 12:28:16,324 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-05 12:28:16,324 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-09-05 12:28:16,353 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-05 12:28:16,368 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-09-05 12:28:16,368 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-05 12:28:16,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 19 conjunts are in the unsatisfiable core [2019-09-05 12:28:16,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 12:28:16,438 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 12:28:16,471 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-05 12:28:16,475 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-05 12:28:16,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-09-05 12:28:16,475 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-05 12:28:16,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-05 12:28:16,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-05 12:28:16,477 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 8 states. [2019-09-05 12:28:16,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:28:16,837 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2019-09-05 12:28:16,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-05 12:28:16,838 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2019-09-05 12:28:16,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:28:16,838 INFO L225 Difference]: With dead ends: 36 [2019-09-05 12:28:16,839 INFO L226 Difference]: Without dead ends: 0 [2019-09-05 12:28:16,839 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-05 12:28:16,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-05 12:28:16,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-05 12:28:16,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-05 12:28:16,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-05 12:28:16,843 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2019-09-05 12:28:16,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:28:16,843 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-05 12:28:16,843 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-05 12:28:16,843 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-05 12:28:16,843 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-05 12:28:16,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-05 12:28:31,675 WARN L188 SmtUtils]: Spent 14.73 s on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2019-09-05 12:28:31,747 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-05 12:28:31,747 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-05 12:28:31,748 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-05 12:28:31,748 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-05 12:28:31,748 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-05 12:28:31,748 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-05 12:28:31,748 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 16 39) the Hoare annotation is: true [2019-09-05 12:28:31,749 INFO L439 ceAbstractionStarter]: At program point L28(line 28) the Hoare annotation is: (or (exists ((v_main_~y~0_13 Int) (v_main_~x~0_14 Int)) (let ((.cse0 (* v_main_~x~0_14 main_~z~0))) (and (= main_~x~0 (+ main_~a~0 .cse0)) (= main_~y~0 (* v_main_~y~0_13 main_~z~0)) (= 0 (+ (- (* v_main_~y~0_13 (* main_~a~0 main_~z~0))) (+ (+ (- v_main_~x~0_14) .cse0) main_~a~0)))))) (and (= main_~y~0 1) (= main_~a~0 main_~x~0))) [2019-09-05 12:28:31,749 INFO L443 ceAbstractionStarter]: For program point L28-1(lines 27 36) no Hoare annotation was computed. [2019-09-05 12:28:31,749 INFO L439 ceAbstractionStarter]: At program point L27-2(lines 27 36) the Hoare annotation is: (or (exists ((v_main_~y~0_13 Int) (v_main_~x~0_14 Int)) (let ((.cse0 (* v_main_~x~0_14 main_~z~0))) (and (= main_~x~0 (+ main_~a~0 .cse0)) (= main_~y~0 (* v_main_~y~0_13 main_~z~0)) (= 0 (+ (- (* v_main_~y~0_13 (* main_~a~0 main_~z~0))) (+ (+ (- v_main_~x~0_14) .cse0) main_~a~0)))))) (and (= main_~y~0 1) (= main_~a~0 main_~x~0))) [2019-09-05 12:28:31,749 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 16 39) no Hoare annotation was computed. [2019-09-05 12:28:31,749 INFO L439 ceAbstractionStarter]: At program point L27-3(lines 27 36) the Hoare annotation is: (or (exists ((v_main_~y~0_13 Int) (v_main_~x~0_14 Int)) (let ((.cse0 (* v_main_~x~0_14 main_~z~0))) (and (= main_~x~0 (+ main_~a~0 .cse0)) (= main_~y~0 (* v_main_~y~0_13 main_~z~0)) (= 0 (+ (- (* v_main_~y~0_13 (* main_~a~0 main_~z~0))) (+ (+ (- v_main_~x~0_14) .cse0) main_~a~0)))))) (and (= main_~y~0 1) (= main_~a~0 main_~x~0)) (and (= main_~x~0 (+ (* (+ main_~a~0 (* main_~a~0 main_~z~0)) main_~z~0) main_~a~0)) (= main_~y~0 (* main_~z~0 main_~z~0)))) [2019-09-05 12:28:31,750 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 16 39) no Hoare annotation was computed. [2019-09-05 12:28:31,750 INFO L443 ceAbstractionStarter]: For program point L37(line 37) no Hoare annotation was computed. [2019-09-05 12:28:31,750 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2019-09-05 12:28:31,750 INFO L443 ceAbstractionStarter]: For program point L11(lines 11 12) no Hoare annotation was computed. [2019-09-05 12:28:31,750 INFO L443 ceAbstractionStarter]: For program point L10(lines 10 13) no Hoare annotation was computed. [2019-09-05 12:28:31,750 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2019-09-05 12:28:31,751 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-09-05 12:28:31,751 INFO L443 ceAbstractionStarter]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2019-09-05 12:28:31,758 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2019-09-05 12:28:31,759 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2019-09-05 12:28:31,759 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2019-09-05 12:28:31,759 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2019-09-05 12:28:31,760 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2019-09-05 12:28:31,774 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2019-09-05 12:28:31,774 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2019-09-05 12:28:31,775 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2019-09-05 12:28:31,775 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2019-09-05 12:28:31,775 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2019-09-05 12:28:31,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.09 12:28:31 BoogieIcfgContainer [2019-09-05 12:28:31,783 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-05 12:28:31,787 INFO L168 Benchmark]: Toolchain (without parser) took 17790.93 ms. Allocated memory was 134.7 MB in the beginning and 226.0 MB in the end (delta: 91.2 MB). Free memory was 86.5 MB in the beginning and 152.1 MB in the end (delta: -65.5 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2019-09-05 12:28:31,789 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 134.7 MB. Free memory was 104.9 MB in the beginning and 104.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-09-05 12:28:31,793 INFO L168 Benchmark]: CACSL2BoogieTranslator took 226.55 ms. Allocated memory is still 134.7 MB. Free memory was 86.3 MB in the beginning and 77.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-09-05 12:28:31,794 INFO L168 Benchmark]: Boogie Preprocessor took 125.24 ms. Allocated memory was 134.7 MB in the beginning and 200.8 MB in the end (delta: 66.1 MB). Free memory was 77.0 MB in the beginning and 178.4 MB in the end (delta: -101.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2019-09-05 12:28:31,795 INFO L168 Benchmark]: RCFGBuilder took 211.51 ms. Allocated memory is still 200.8 MB. Free memory was 178.4 MB in the beginning and 167.1 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2019-09-05 12:28:31,796 INFO L168 Benchmark]: TraceAbstraction took 17216.98 ms. Allocated memory was 200.8 MB in the beginning and 226.0 MB in the end (delta: 25.2 MB). Free memory was 167.1 MB in the beginning and 152.1 MB in the end (delta: 15.0 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. [2019-09-05 12:28:31,805 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 134.7 MB. Free memory was 104.9 MB in the beginning and 104.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 226.55 ms. Allocated memory is still 134.7 MB. Free memory was 86.3 MB in the beginning and 77.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.24 ms. Allocated memory was 134.7 MB in the beginning and 200.8 MB in the end (delta: 66.1 MB). Free memory was 77.0 MB in the beginning and 178.4 MB in the end (delta: -101.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 211.51 ms. Allocated memory is still 200.8 MB. Free memory was 178.4 MB in the beginning and 167.1 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17216.98 ms. Allocated memory was 200.8 MB in the beginning and 226.0 MB in the end (delta: 25.2 MB). Free memory was 167.1 MB in the beginning and 152.1 MB in the end (delta: 15.0 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 27]: Loop Invariant [2019-09-05 12:28:31,819 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2019-09-05 12:28:31,819 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2019-09-05 12:28:31,819 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2019-09-05 12:28:31,820 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2019-09-05 12:28:31,820 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2019-09-05 12:28:31,822 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2019-09-05 12:28:31,822 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2019-09-05 12:28:31,822 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2019-09-05 12:28:31,823 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2019-09-05 12:28:31,823 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] Derived loop invariant: (\exists v_main_~y~0_13 : int, v_main_~x~0_14 : int :: (x == a + v_main_~x~0_14 * z && y == v_main_~y~0_13 * z) && 0 == -(v_main_~y~0_13 * (a * z)) + (-v_main_~x~0_14 + v_main_~x~0_14 * z + a)) || (y == 1 && a == x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. SAFE Result, 17.1s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 14.9s HoareAnnotationTime, HoareTripleCheckerStatistics: 74 SDtfs, 41 SDslu, 217 SDs, 0 SdLazy, 172 SolverSat, 16 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 17 PreInvPairs, 29 NumberOfFragments, 139 HoareAnnotationTreeSize, 17 FomulaSimplifications, 180 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 45 FormulaSimplificationTreeSizeReductionInter, 14.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 92 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 87 ConstructedInterpolants, 2 QuantifiedInterpolants, 7731 SizeOfPredicates, 12 NumberOfNonLiveVariables, 220 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 39/52 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...