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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/array-examples/standard_copy2_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:53:06,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:53:06,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:53:06,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:53:06,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:53:06,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:53:06,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:53:06,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:53:06,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:53:06,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:53:06,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:53:06,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:53:06,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:53:06,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:53:06,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:53:06,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:53:06,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:53:06,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:53:06,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:53:06,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:53:06,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:53:06,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:53:06,483 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:53:06,484 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:53:06,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:53:06,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:53:06,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:53:06,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:53:06,498 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 [2019-10-13 19:53:06,527 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:53:06,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:53:06,529 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:53:06,529 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:53:06,529 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:53:06,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:53:06,530 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:53:06,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:53:06,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:53:06,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:53:06,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:53:06,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:53:06,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:53:06,531 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:53:06,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:53:06,532 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:53:06,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:53:06,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:53:06,538 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:53:06,538 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:53:06,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:53:06,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:53:06,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:53:06,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:53:06,539 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:53:06,539 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:53:06,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:53:06,540 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:53:06,540 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 19:53:06,819 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:53:06,836 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:53:06,840 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:53:06,842 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:53:06,842 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:53:06,843 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy2_ground-2.i [2019-10-13 19:53:06,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/200b47eff/43c8f584c10042ae91c60bc71f0c5618/FLAGc32e54347 [2019-10-13 19:53:07,398 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:53:07,399 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy2_ground-2.i [2019-10-13 19:53:07,405 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/200b47eff/43c8f584c10042ae91c60bc71f0c5618/FLAGc32e54347 [2019-10-13 19:53:07,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/200b47eff/43c8f584c10042ae91c60bc71f0c5618 [2019-10-13 19:53:07,763 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:53:07,764 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:53:07,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:07,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:53:07,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:53:07,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:07" (1/1) ... [2019-10-13 19:53:07,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@316d8740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:07, skipping insertion in model container [2019-10-13 19:53:07,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:07" (1/1) ... [2019-10-13 19:53:07,782 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:53:07,802 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:53:08,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:08,022 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:53:08,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:08,075 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:53:08,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:08 WrapperNode [2019-10-13 19:53:08,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:08,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:53:08,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:53:08,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:53:08,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:08" (1/1) ... [2019-10-13 19:53:08,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:08" (1/1) ... [2019-10-13 19:53:08,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:08" (1/1) ... [2019-10-13 19:53:08,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:08" (1/1) ... [2019-10-13 19:53:08,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:08" (1/1) ... [2019-10-13 19:53:08,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:08" (1/1) ... [2019-10-13 19:53:08,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:08" (1/1) ... [2019-10-13 19:53:08,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:53:08,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:53:08,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:53:08,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:53:08,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:08" (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 [2019-10-13 19:53:08,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:53:08,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:53:08,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 19:53:08,266 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:53:08,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:53:08,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:53:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:53:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:53:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:53:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:53:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:53:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:53:08,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:53:08,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:53:08,557 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:53:08,558 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 19:53:08,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:08 BoogieIcfgContainer [2019-10-13 19:53:08,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:53:08,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:53:08,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:53:08,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:53:08,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:53:07" (1/3) ... [2019-10-13 19:53:08,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a146c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:08, skipping insertion in model container [2019-10-13 19:53:08,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:08" (2/3) ... [2019-10-13 19:53:08,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a146c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:08, skipping insertion in model container [2019-10-13 19:53:08,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:08" (3/3) ... [2019-10-13 19:53:08,593 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copy2_ground-2.i [2019-10-13 19:53:08,610 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:53:08,620 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:53:08,633 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:53:08,673 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:53:08,673 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:53:08,674 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:53:08,674 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:53:08,674 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:53:08,674 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:53:08,674 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:53:08,675 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:53:08,693 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-10-13 19:53:08,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-13 19:53:08,699 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:08,700 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:08,702 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:08,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:08,707 INFO L82 PathProgramCache]: Analyzing trace with hash 415311520, now seen corresponding path program 1 times [2019-10-13 19:53:08,714 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:08,715 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438729429] [2019-10-13 19:53:08,715 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:08,715 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:08,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:08,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:53:08,844 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438729429] [2019-10-13 19:53:08,845 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:08,845 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 19:53:08,846 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746699245] [2019-10-13 19:53:08,849 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:08,851 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:08,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:08,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:08,864 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2019-10-13 19:53:08,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:08,885 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions. [2019-10-13 19:53:08,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:08,886 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-10-13 19:53:08,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:08,893 INFO L225 Difference]: With dead ends: 52 [2019-10-13 19:53:08,893 INFO L226 Difference]: Without dead ends: 25 [2019-10-13 19:53:08,897 INFO L600 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 [2019-10-13 19:53:08,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-13 19:53:08,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-10-13 19:53:08,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-13 19:53:08,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-10-13 19:53:08,937 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2019-10-13 19:53:08,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:08,937 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-10-13 19:53:08,937 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:08,938 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-10-13 19:53:08,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-13 19:53:08,939 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:08,939 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:08,939 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:08,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:08,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1687882214, now seen corresponding path program 1 times [2019-10-13 19:53:08,940 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:08,941 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717813768] [2019-10-13 19:53:08,941 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:08,941 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:08,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:09,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:53:09,028 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717813768] [2019-10-13 19:53:09,028 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:09,028 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:53:09,029 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713074339] [2019-10-13 19:53:09,030 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:53:09,031 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:09,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:53:09,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:09,032 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 3 states. [2019-10-13 19:53:09,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:09,066 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2019-10-13 19:53:09,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:53:09,067 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-13 19:53:09,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:09,068 INFO L225 Difference]: With dead ends: 44 [2019-10-13 19:53:09,068 INFO L226 Difference]: Without dead ends: 27 [2019-10-13 19:53:09,069 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:09,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-10-13 19:53:09,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2019-10-13 19:53:09,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-13 19:53:09,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2019-10-13 19:53:09,077 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 17 [2019-10-13 19:53:09,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:09,077 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2019-10-13 19:53:09,077 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:53:09,077 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2019-10-13 19:53:09,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-13 19:53:09,078 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:09,079 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:09,079 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:09,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:09,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1114616120, now seen corresponding path program 1 times [2019-10-13 19:53:09,080 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:09,080 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458292731] [2019-10-13 19:53:09,081 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:09,081 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:09,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:09,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:53:09,147 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458292731] [2019-10-13 19:53:09,147 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:09,147 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:53:09,148 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924227449] [2019-10-13 19:53:09,148 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:53:09,149 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:09,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:53:09,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:09,150 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 3 states. [2019-10-13 19:53:09,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:09,181 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2019-10-13 19:53:09,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:53:09,182 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-10-13 19:53:09,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:09,183 INFO L225 Difference]: With dead ends: 44 [2019-10-13 19:53:09,184 INFO L226 Difference]: Without dead ends: 30 [2019-10-13 19:53:09,184 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:09,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-10-13 19:53:09,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2019-10-13 19:53:09,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-13 19:53:09,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2019-10-13 19:53:09,191 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 19 [2019-10-13 19:53:09,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:09,192 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2019-10-13 19:53:09,192 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:53:09,192 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2019-10-13 19:53:09,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-13 19:53:09,193 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:09,193 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:09,194 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:09,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:09,194 INFO L82 PathProgramCache]: Analyzing trace with hash -825329612, now seen corresponding path program 1 times [2019-10-13 19:53:09,195 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:09,195 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775860707] [2019-10-13 19:53:09,195 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:09,195 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:09,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:09,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 19:53:09,259 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775860707] [2019-10-13 19:53:09,260 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813482488] [2019-10-13 19:53:09,260 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 [2019-10-13 19:53:09,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:09,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:53:09,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:09,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 19:53:09,383 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:09,430 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 19:53:09,430 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [772077485] [2019-10-13 19:53:09,440 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 24 [2019-10-13 19:53:09,482 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 19:53:09,482 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 19:53:09,539 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 19:53:09,540 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 29 variables. [2019-10-13 19:53:09,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:09,543 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 19:53:09,578 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-13 19:53:09,579 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 19:53:09,581 INFO L553 sIntCurrentIteration]: We unified 22 AI predicates to 22 [2019-10-13 19:53:09,581 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 19:53:09,582 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-13 19:53:09,582 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 8 [2019-10-13 19:53:09,582 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290908580] [2019-10-13 19:53:09,583 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:09,584 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:09,584 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 19:53:09,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:09,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:09,585 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 2 states. [2019-10-13 19:53:09,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:09,587 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-10-13 19:53:09,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:09,588 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2019-10-13 19:53:09,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:09,588 INFO L225 Difference]: With dead ends: 28 [2019-10-13 19:53:09,588 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:53:09,589 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:09,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:53:09,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:53:09,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:53:09,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:53:09,590 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-10-13 19:53:09,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:09,591 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:53:09,591 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:09,591 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:53:09,591 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:53:09,796 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:09,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:53:09,844 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:09,844 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:09,844 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:09,844 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:09,845 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 19:53:09,845 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:09,845 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:09,845 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 4 24) no Hoare annotation was computed. [2019-10-13 19:53:09,845 INFO L443 ceAbstractionStarter]: For program point L20-2(lines 20 22) no Hoare annotation was computed. [2019-10-13 19:53:09,845 INFO L439 ceAbstractionStarter]: At program point L20-3(lines 20 22) the Hoare annotation is: false [2019-10-13 19:53:09,846 INFO L443 ceAbstractionStarter]: For program point L20-4(lines 20 22) no Hoare annotation was computed. [2019-10-13 19:53:09,846 INFO L443 ceAbstractionStarter]: For program point L16-2(lines 16 18) no Hoare annotation was computed. [2019-10-13 19:53:09,846 INFO L439 ceAbstractionStarter]: At program point L16-3(lines 16 18) the Hoare annotation is: false [2019-10-13 19:53:09,847 INFO L443 ceAbstractionStarter]: For program point L16-4(lines 16 18) no Hoare annotation was computed. [2019-10-13 19:53:09,847 INFO L439 ceAbstractionStarter]: At program point L21(line 21) the Hoare annotation is: false [2019-10-13 19:53:09,847 INFO L443 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2019-10-13 19:53:09,847 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 4 24) no Hoare annotation was computed. [2019-10-13 19:53:09,847 INFO L443 ceAbstractionStarter]: For program point L13-2(lines 13 15) no Hoare annotation was computed. [2019-10-13 19:53:09,848 INFO L439 ceAbstractionStarter]: At program point L13-3(lines 13 15) the Hoare annotation is: false [2019-10-13 19:53:09,848 INFO L443 ceAbstractionStarter]: For program point L13-4(lines 13 15) no Hoare annotation was computed. [2019-10-13 19:53:09,848 INFO L443 ceAbstractionStarter]: For program point L9-2(lines 9 11) no Hoare annotation was computed. [2019-10-13 19:53:09,848 INFO L439 ceAbstractionStarter]: At program point L9-3(lines 9 11) the Hoare annotation is: false [2019-10-13 19:53:09,848 INFO L443 ceAbstractionStarter]: For program point L9-4(lines 9 11) no Hoare annotation was computed. [2019-10-13 19:53:09,848 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 4 24) the Hoare annotation is: true [2019-10-13 19:53:09,849 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-10-13 19:53:09,849 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-10-13 19:53:09,849 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-10-13 19:53:09,849 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-10-13 19:53:09,849 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-10-13 19:53:09,851 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-10-13 19:53:09,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:53:09 BoogieIcfgContainer [2019-10-13 19:53:09,864 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:53:09,868 INFO L168 Benchmark]: Toolchain (without parser) took 2101.55 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 102.5 MB in the beginning and 97.2 MB in the end (delta: 5.2 MB). Peak memory consumption was 62.9 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:09,870 INFO L168 Benchmark]: CDTParser took 1.16 ms. Allocated memory is still 145.8 MB. Free memory is still 120.5 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-13 19:53:09,872 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.99 ms. Allocated memory is still 145.8 MB. Free memory was 102.1 MB in the beginning and 91.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:09,874 INFO L168 Benchmark]: Boogie Preprocessor took 123.29 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 91.7 MB in the beginning and 181.1 MB in the end (delta: -89.4 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:09,881 INFO L168 Benchmark]: RCFGBuilder took 362.19 ms. Allocated memory is still 203.4 MB. Free memory was 181.1 MB in the beginning and 165.6 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:09,882 INFO L168 Benchmark]: TraceAbstraction took 1300.71 ms. Allocated memory is still 203.4 MB. Free memory was 165.6 MB in the beginning and 97.2 MB in the end (delta: 68.4 MB). Peak memory consumption was 68.4 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:09,890 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.16 ms. Allocated memory is still 145.8 MB. Free memory is still 120.5 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 310.99 ms. Allocated memory is still 145.8 MB. Free memory was 102.1 MB in the beginning and 91.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.29 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 91.7 MB in the beginning and 181.1 MB in the end (delta: -89.4 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 362.19 ms. Allocated memory is still 203.4 MB. Free memory was 181.1 MB in the beginning and 165.6 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1300.71 ms. Allocated memory is still 203.4 MB. Free memory was 165.6 MB in the beginning and 97.2 MB in the end (delta: 68.4 MB). Peak memory consumption was 68.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: 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: 9]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 30 locations, 1 error locations. Result: SAFE, OverallTime: 1.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 88 SDtfs, 3 SDslu, 44 SDs, 0 SdLazy, 15 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 13 PreInvPairs, 13 NumberOfFragments, 10 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 2752 SizeOfPredicates, 1 NumberOfNonLiveVariables, 86 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 7/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 104, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9204545454545454, AVG_VARS_REMOVED_DURING_WEAKENING: 0.9545454545454546, AVG_WEAKENED_CONJUNCTS: 0.2727272727272727, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...