/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/large_const.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:22:40,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:22:40,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:22:40,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:22:40,525 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:22:40,526 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:22:40,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:22:40,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:22:40,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:22:40,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:22:40,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:22:40,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:22:40,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:22:40,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:22:40,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:22:40,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:22:40,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:22:40,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:22:40,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:22:40,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:22:40,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:22:40,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:22:40,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:22:40,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:22:40,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 21:22:40,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:22:40,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:22:40,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:22:40,574 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 [2019-11-06 21:22:40,594 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:22:40,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:22:40,597 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:22:40,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:22:40,597 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:22:40,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:22:40,598 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:22:40,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:22:40,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:22:40,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:22:40,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:22:40,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:22:40,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:22:40,600 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:22:40,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:22:40,601 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:22:40,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:22:40,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:22:40,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:22:40,601 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:22:40,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:22:40,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:22:40,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:22:40,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:22:40,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:22:40,603 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:22:40,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:22:40,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:22:40,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:22:40,876 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:22:40,889 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:22:40,892 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:22:40,893 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:22:40,894 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:22:40,894 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/large_const.i [2019-11-06 21:22:40,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13c39ba0c/4f25788d88ae4e8f8f83f67838486fef/FLAGf32828c43 [2019-11-06 21:22:41,446 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:22:41,447 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const.i [2019-11-06 21:22:41,453 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13c39ba0c/4f25788d88ae4e8f8f83f67838486fef/FLAGf32828c43 [2019-11-06 21:22:41,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13c39ba0c/4f25788d88ae4e8f8f83f67838486fef [2019-11-06 21:22:41,872 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:22:41,873 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:22:41,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:22:41,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:22:41,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:22:41,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:22:41" (1/1) ... [2019-11-06 21:22:41,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@778299e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:41, skipping insertion in model container [2019-11-06 21:22:41,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:22:41" (1/1) ... [2019-11-06 21:22:41,888 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:22:41,905 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:22:42,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:22:42,069 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:22:42,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:22:42,098 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:22:42,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:42 WrapperNode [2019-11-06 21:22:42,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:22:42,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:22:42,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:22:42,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:22:42,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:42" (1/1) ... [2019-11-06 21:22:42,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:42" (1/1) ... [2019-11-06 21:22:42,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:42" (1/1) ... [2019-11-06 21:22:42,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:42" (1/1) ... [2019-11-06 21:22:42,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:42" (1/1) ... [2019-11-06 21:22:42,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:42" (1/1) ... [2019-11-06 21:22:42,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:42" (1/1) ... [2019-11-06 21:22:42,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:22:42,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:22:42,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:22:42,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:22:42,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:42" (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 [2019-11-06 21:22:42,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:22:42,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:22:42,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 21:22:42,263 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:22:42,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:22:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 21:22:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 21:22:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:22:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:22:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:22:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:22:42,527 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:22:42,527 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-06 21:22:42,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:22:42 BoogieIcfgContainer [2019-11-06 21:22:42,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:22:42,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:22:42,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:22:42,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:22:42,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:22:41" (1/3) ... [2019-11-06 21:22:42,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6f39f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:22:42, skipping insertion in model container [2019-11-06 21:22:42,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:42" (2/3) ... [2019-11-06 21:22:42,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6f39f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:22:42, skipping insertion in model container [2019-11-06 21:22:42,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:22:42" (3/3) ... [2019-11-06 21:22:42,548 INFO L109 eAbstractionObserver]: Analyzing ICFG large_const.i [2019-11-06 21:22:42,571 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:22:42,580 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:22:42,591 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:22:42,616 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:22:42,616 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:22:42,617 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:22:42,617 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:22:42,617 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:22:42,617 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:22:42,617 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:22:42,617 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:22:42,633 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-11-06 21:22:42,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-06 21:22:42,639 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:22:42,639 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:22:42,641 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:22:42,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:22:42,647 INFO L82 PathProgramCache]: Analyzing trace with hash 576145336, now seen corresponding path program 1 times [2019-11-06 21:22:42,656 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:22:42,657 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167500193] [2019-11-06 21:22:42,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:22:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:42,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:22:42,768 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167500193] [2019-11-06 21:22:42,769 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:22:42,769 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 21:22:42,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478163418] [2019-11-06 21:22:42,774 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 21:22:42,774 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:22:42,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 21:22:42,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 21:22:42,787 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-11-06 21:22:42,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:22:42,805 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2019-11-06 21:22:42,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 21:22:42,807 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-11-06 21:22:42,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:22:42,814 INFO L225 Difference]: With dead ends: 40 [2019-11-06 21:22:42,814 INFO L226 Difference]: Without dead ends: 20 [2019-11-06 21:22:42,818 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 21:22:42,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-06 21:22:42,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-06 21:22:42,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-06 21:22:42,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-11-06 21:22:42,857 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 13 [2019-11-06 21:22:42,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:22:42,857 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-11-06 21:22:42,858 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 21:22:42,858 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-11-06 21:22:42,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-06 21:22:42,859 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:22:42,859 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:22:42,860 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:22:42,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:22:42,860 INFO L82 PathProgramCache]: Analyzing trace with hash 893444581, now seen corresponding path program 1 times [2019-11-06 21:22:42,861 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:22:42,861 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828119984] [2019-11-06 21:22:42,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:22:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:42,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:42,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:22:42,958 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828119984] [2019-11-06 21:22:42,959 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:22:42,959 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 21:22:42,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720555701] [2019-11-06 21:22:42,961 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:22:42,961 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:22:42,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:22:42,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:22:42,962 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2019-11-06 21:22:43,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:22:43,040 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2019-11-06 21:22:43,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:22:43,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-06 21:22:43,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:22:43,042 INFO L225 Difference]: With dead ends: 32 [2019-11-06 21:22:43,043 INFO L226 Difference]: Without dead ends: 21 [2019-11-06 21:22:43,044 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:22:43,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-06 21:22:43,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-06 21:22:43,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-06 21:22:43,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2019-11-06 21:22:43,050 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 13 [2019-11-06 21:22:43,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:22:43,051 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2019-11-06 21:22:43,051 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:22:43,051 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2019-11-06 21:22:43,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-06 21:22:43,052 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:22:43,052 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:22:43,053 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:22:43,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:22:43,053 INFO L82 PathProgramCache]: Analyzing trace with hash -884671747, now seen corresponding path program 1 times [2019-11-06 21:22:43,054 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:22:43,054 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371307853] [2019-11-06 21:22:43,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:22:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:43,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:22:43,158 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371307853] [2019-11-06 21:22:43,159 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830559815] [2019-11-06 21:22:43,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:22:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:43,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-06 21:22:43,225 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:22:43,274 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:22:43,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:22:43,307 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:22:43,307 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2019-11-06 21:22:43,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717410893] [2019-11-06 21:22:43,308 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 21:22:43,308 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:22:43,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 21:22:43,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:22:43,309 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 10 states. [2019-11-06 21:22:43,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:22:43,461 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2019-11-06 21:22:43,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 21:22:43,462 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2019-11-06 21:22:43,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:22:43,464 INFO L225 Difference]: With dead ends: 41 [2019-11-06 21:22:43,465 INFO L226 Difference]: Without dead ends: 39 [2019-11-06 21:22:43,465 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:22:43,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-06 21:22:43,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2019-11-06 21:22:43,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-06 21:22:43,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2019-11-06 21:22:43,481 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 16 [2019-11-06 21:22:43,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:22:43,481 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2019-11-06 21:22:43,481 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 21:22:43,482 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2019-11-06 21:22:43,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-06 21:22:43,482 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:22:43,484 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:22:43,689 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:22:43,689 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:22:43,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:22:43,690 INFO L82 PathProgramCache]: Analyzing trace with hash 213378718, now seen corresponding path program 1 times [2019-11-06 21:22:43,690 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:22:43,690 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367755436] [2019-11-06 21:22:43,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:22:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:43,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:22:43,792 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367755436] [2019-11-06 21:22:43,792 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517716271] [2019-11-06 21:22:43,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:22:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:43,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-06 21:22:43,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:22:43,863 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:22:43,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:22:43,899 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:22:43,899 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2019-11-06 21:22:43,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441438279] [2019-11-06 21:22:43,900 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 21:22:43,900 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:22:43,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 21:22:43,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:22:43,901 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 10 states. [2019-11-06 21:22:44,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:22:44,024 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2019-11-06 21:22:44,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 21:22:44,025 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2019-11-06 21:22:44,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:22:44,028 INFO L225 Difference]: With dead ends: 51 [2019-11-06 21:22:44,028 INFO L226 Difference]: Without dead ends: 49 [2019-11-06 21:22:44,029 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:22:44,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-06 21:22:44,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 37. [2019-11-06 21:22:44,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-06 21:22:44,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2019-11-06 21:22:44,039 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 17 [2019-11-06 21:22:44,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:22:44,040 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2019-11-06 21:22:44,040 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 21:22:44,040 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2019-11-06 21:22:44,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-06 21:22:44,041 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:22:44,041 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:22:44,249 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:22:44,249 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:22:44,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:22:44,250 INFO L82 PathProgramCache]: Analyzing trace with hash -595967908, now seen corresponding path program 1 times [2019-11-06 21:22:44,250 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:22:44,250 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491743314] [2019-11-06 21:22:44,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:22:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:44,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:22:44,340 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491743314] [2019-11-06 21:22:44,341 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002554097] [2019-11-06 21:22:44,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:22:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:44,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-06 21:22:44,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:22:44,405 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:22:44,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:22:44,437 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:22:44,437 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2019-11-06 21:22:44,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969537413] [2019-11-06 21:22:44,438 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 21:22:44,438 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:22:44,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 21:22:44,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:22:44,439 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand 10 states. [2019-11-06 21:22:44,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:22:44,565 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-11-06 21:22:44,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 21:22:44,566 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2019-11-06 21:22:44,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:22:44,569 INFO L225 Difference]: With dead ends: 55 [2019-11-06 21:22:44,569 INFO L226 Difference]: Without dead ends: 53 [2019-11-06 21:22:44,570 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:22:44,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-06 21:22:44,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 42. [2019-11-06 21:22:44,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-06 21:22:44,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 55 transitions. [2019-11-06 21:22:44,590 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 55 transitions. Word has length 17 [2019-11-06 21:22:44,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:22:44,591 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 55 transitions. [2019-11-06 21:22:44,591 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 21:22:44,591 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 55 transitions. [2019-11-06 21:22:44,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-06 21:22:44,594 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:22:44,594 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:22:44,795 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:22:44,795 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:22:44,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:22:44,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1650045878, now seen corresponding path program 1 times [2019-11-06 21:22:44,796 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:22:44,796 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460044554] [2019-11-06 21:22:44,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:22:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:44,935 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:22:44,935 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460044554] [2019-11-06 21:22:44,935 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400057163] [2019-11-06 21:22:44,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:22:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:44,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 21:22:44,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:22:45,032 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:22:45,032 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:22:45,033 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2019-11-06 21:22:45,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461546899] [2019-11-06 21:22:45,033 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:22:45,034 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:22:45,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:22:45,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-11-06 21:22:45,034 INFO L87 Difference]: Start difference. First operand 42 states and 55 transitions. Second operand 5 states. [2019-11-06 21:22:45,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:22:45,064 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2019-11-06 21:22:45,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:22:45,065 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-06 21:22:45,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:22:45,066 INFO L225 Difference]: With dead ends: 61 [2019-11-06 21:22:45,066 INFO L226 Difference]: Without dead ends: 29 [2019-11-06 21:22:45,067 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-11-06 21:22:45,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-06 21:22:45,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2019-11-06 21:22:45,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-06 21:22:45,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2019-11-06 21:22:45,073 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 20 [2019-11-06 21:22:45,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:22:45,073 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2019-11-06 21:22:45,074 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:22:45,074 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2019-11-06 21:22:45,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-06 21:22:45,075 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:22:45,075 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:22:45,283 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:22:45,284 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:22:45,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:22:45,284 INFO L82 PathProgramCache]: Analyzing trace with hash -785465255, now seen corresponding path program 1 times [2019-11-06 21:22:45,284 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:22:45,285 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973311682] [2019-11-06 21:22:45,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:22:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:45,399 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 21:22:45,399 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973311682] [2019-11-06 21:22:45,400 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19652554] [2019-11-06 21:22:45,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:22:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:45,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 21:22:45,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:22:45,511 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:22:45,512 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:22:45,513 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2019-11-06 21:22:45,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629245696] [2019-11-06 21:22:45,514 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:22:45,514 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:22:45,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:22:45,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:22:45,515 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 5 states. [2019-11-06 21:22:45,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:22:45,555 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2019-11-06 21:22:45,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:22:45,556 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-11-06 21:22:45,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:22:45,557 INFO L225 Difference]: With dead ends: 29 [2019-11-06 21:22:45,557 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 21:22:45,557 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:22:45,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 21:22:45,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 21:22:45,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 21:22:45,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 21:22:45,558 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-11-06 21:22:45,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:22:45,558 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 21:22:45,558 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:22:45,559 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 21:22:45,559 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 21:22:45,760 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:22:45,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 21:22:46,070 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-11-06 21:22:46,070 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:22:46,070 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:22:46,071 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 21:22:46,071 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 21:22:46,071 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 21:22:46,071 INFO L439 ceAbstractionStarter]: At program point L33(line 33) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 10000 main_~c3~0) (<= 2000 main_~c2~0) (<= 4000 main_~c1~0) (<= 1 main_~i~0) (< main_~n~0 2) (<= 2000 main_~k~0)) [2019-11-06 21:22:46,071 INFO L443 ceAbstractionStarter]: For program point L33-1(line 33) no Hoare annotation was computed. [2019-11-06 21:22:46,071 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 38) no Hoare annotation was computed. [2019-11-06 21:22:46,071 INFO L443 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2019-11-06 21:22:46,071 INFO L443 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-11-06 21:22:46,072 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 38) no Hoare annotation was computed. [2019-11-06 21:22:46,072 INFO L439 ceAbstractionStarter]: At program point L32-2(lines 32 36) the Hoare annotation is: (let ((.cse1 (<= 10000 main_~c3~0)) (.cse2 (<= 2000 main_~c2~0)) (.cse3 (<= 4000 main_~c1~0)) (.cse0 (<= 1 main_~i~0)) (.cse4 (< main_~n~0 2))) (or (and (<= main_~n~0 0) (<= main_~i~0 0) (<= main_~n~0 main_~j~0)) (and (<= 0 main_~j~0) .cse0 (and .cse1 (and .cse2 .cse3 (<= 2000 main_~k~0))) .cse4) (and .cse1 .cse2 .cse3 .cse0 (<= 1 main_~j~0) .cse4))) [2019-11-06 21:22:46,072 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 38) the Hoare annotation is: true [2019-11-06 21:22:46,072 INFO L443 ceAbstractionStarter]: For program point L32-3(lines 32 36) no Hoare annotation was computed. [2019-11-06 21:22:46,072 INFO L443 ceAbstractionStarter]: For program point L26(lines 26 29) no Hoare annotation was computed. [2019-11-06 21:22:46,072 INFO L443 ceAbstractionStarter]: For program point L24(lines 24 29) no Hoare annotation was computed. [2019-11-06 21:22:46,073 INFO L439 ceAbstractionStarter]: At program point L26-2(lines 20 30) the Hoare annotation is: (let ((.cse0 (<= 10000 main_~c3~0)) (.cse1 (<= 2000 main_~c2~0)) (.cse2 (<= 4000 main_~c1~0))) (or (and (and .cse0 .cse1 .cse2 (<= 1 main_~i~0) (<= 2000 main_~k~0)) (< main_~n~0 2)) (and .cse0 .cse1 .cse2 (<= 0 main_~i~0) (<= 0 main_~k~0) (<= main_~i~0 0)))) [2019-11-06 21:22:46,073 INFO L443 ceAbstractionStarter]: For program point L20-2(lines 20 30) no Hoare annotation was computed. [2019-11-06 21:22:46,073 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-11-06 21:22:46,073 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-06 21:22:46,073 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-11-06 21:22:46,073 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-06 21:22:46,073 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-06 21:22:46,074 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-11-06 21:22:46,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:22:46 BoogieIcfgContainer [2019-11-06 21:22:46,091 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 21:22:46,094 INFO L168 Benchmark]: Toolchain (without parser) took 4219.43 ms. Allocated memory was 138.4 MB in the beginning and 244.8 MB in the end (delta: 106.4 MB). Free memory was 103.8 MB in the beginning and 185.3 MB in the end (delta: -81.5 MB). Peak memory consumption was 119.5 MB. Max. memory is 7.1 GB. [2019-11-06 21:22:46,095 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-06 21:22:46,096 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.69 ms. Allocated memory is still 138.4 MB. Free memory was 103.6 MB in the beginning and 94.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-11-06 21:22:46,097 INFO L168 Benchmark]: Boogie Preprocessor took 101.00 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 94.0 MB in the beginning and 179.6 MB in the end (delta: -85.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-11-06 21:22:46,098 INFO L168 Benchmark]: RCFGBuilder took 328.68 ms. Allocated memory is still 201.3 MB. Free memory was 179.6 MB in the beginning and 165.3 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2019-11-06 21:22:46,099 INFO L168 Benchmark]: TraceAbstraction took 3557.77 ms. Allocated memory was 201.3 MB in the beginning and 244.8 MB in the end (delta: 43.5 MB). Free memory was 165.3 MB in the beginning and 185.3 MB in the end (delta: -20.0 MB). Peak memory consumption was 118.1 MB. Max. memory is 7.1 GB. [2019-11-06 21:22:46,103 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 224.69 ms. Allocated memory is still 138.4 MB. Free memory was 103.6 MB in the beginning and 94.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.00 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 94.0 MB in the beginning and 179.6 MB in the end (delta: -85.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 328.68 ms. Allocated memory is still 201.3 MB. Free memory was 179.6 MB in the beginning and 165.3 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3557.77 ms. Allocated memory was 201.3 MB in the beginning and 244.8 MB in the end (delta: 43.5 MB). Free memory was 165.3 MB in the beginning and 185.3 MB in the end (delta: -20.0 MB). Peak memory consumption was 118.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 20]: Loop Invariant Derived loop invariant: (((((10000 <= c3 && 2000 <= c2) && 4000 <= c1) && 1 <= i) && 2000 <= k) && n < 2) || (((((10000 <= c3 && 2000 <= c2) && 4000 <= c1) && 0 <= i) && 0 <= k) && i <= 0) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: (((n <= 0 && i <= 0) && n <= j) || (((0 <= j && 1 <= i) && 10000 <= c3 && (2000 <= c2 && 4000 <= c1) && 2000 <= k) && n < 2)) || (((((10000 <= c3 && 2000 <= c2) && 4000 <= c1) && 1 <= i) && 1 <= j) && n < 2) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Result: SAFE, OverallTime: 3.4s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, HoareTripleCheckerStatistics: 168 SDtfs, 118 SDslu, 478 SDs, 0 SdLazy, 273 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 162 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=5, 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, 7 MinimizatonAttempts, 33 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 13 PreInvPairs, 19 NumberOfFragments, 123 HoareAnnotationTreeSize, 13 FomulaSimplifications, 136 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 83 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 212 NumberOfCodeBlocks, 212 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 9943 SizeOfPredicates, 12 NumberOfNonLiveVariables, 344 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 13/26 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...