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/loop-crafted/simple_array_index_value_3.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:05:43,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:05:43,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:05:43,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:05:43,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:05:43,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:05:43,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:05:43,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:05:43,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:05:43,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:05:43,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:05:43,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:05:43,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:05:43,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:05:43,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:05:43,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:05:43,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:05:43,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:05:43,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:05:43,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:05:43,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:05:43,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:05:43,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:05:43,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:05:43,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:05:43,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:05:43,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:05:43,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:05:43,153 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 21:05:43,173 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:05:43,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:05:43,175 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:05:43,175 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:05:43,175 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:05:43,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:05:43,176 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:05:43,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:05:43,176 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:05:43,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:05:43,176 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:05:43,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:05:43,177 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:05:43,177 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:05:43,177 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:05:43,177 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:05:43,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:05:43,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:05:43,178 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:05:43,178 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:05:43,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:05:43,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:05:43,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:05:43,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:05:43,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:05:43,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:05:43,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:05:43,180 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:05:43,180 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 21:05:43,456 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:05:43,468 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:05:43,472 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:05:43,473 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:05:43,474 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:05:43,474 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_3.i [2019-10-13 21:05:43,556 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10f456a1a/f5ce44ced4804a6984e2656af8825085/FLAG4dd2cfd7c [2019-10-13 21:05:44,012 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:05:44,013 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_3.i [2019-10-13 21:05:44,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10f456a1a/f5ce44ced4804a6984e2656af8825085/FLAG4dd2cfd7c [2019-10-13 21:05:44,372 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10f456a1a/f5ce44ced4804a6984e2656af8825085 [2019-10-13 21:05:44,381 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:05:44,383 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:05:44,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:05:44,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:05:44,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:05:44,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:05:44" (1/1) ... [2019-10-13 21:05:44,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a7e4e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:44, skipping insertion in model container [2019-10-13 21:05:44,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:05:44" (1/1) ... [2019-10-13 21:05:44,404 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:05:44,427 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:05:44,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:05:44,660 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:05:44,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:05:44,694 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:05:44,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:44 WrapperNode [2019-10-13 21:05:44,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:05:44,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:05:44,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:05:44,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:05:44,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:44" (1/1) ... [2019-10-13 21:05:44,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:44" (1/1) ... [2019-10-13 21:05:44,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:44" (1/1) ... [2019-10-13 21:05:44,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:44" (1/1) ... [2019-10-13 21:05:44,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:44" (1/1) ... [2019-10-13 21:05:44,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:44" (1/1) ... [2019-10-13 21:05:44,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:44" (1/1) ... [2019-10-13 21:05:44,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:05:44,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:05:44,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:05:44,807 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:05:44,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:44" (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 21:05:44,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:05:44,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:05:44,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 21:05:44,866 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:05:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:05:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 21:05:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 21:05:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:05:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:05:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:05:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:05:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:05:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:05:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:05:45,118 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:05:45,118 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-13 21:05:45,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:05:45 BoogieIcfgContainer [2019-10-13 21:05:45,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:05:45,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:05:45,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:05:45,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:05:45,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:05:44" (1/3) ... [2019-10-13 21:05:45,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4313123d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:05:45, skipping insertion in model container [2019-10-13 21:05:45,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:44" (2/3) ... [2019-10-13 21:05:45,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4313123d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:05:45, skipping insertion in model container [2019-10-13 21:05:45,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:05:45" (3/3) ... [2019-10-13 21:05:45,132 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_3.i [2019-10-13 21:05:45,155 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:05:45,171 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:05:45,182 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:05:45,217 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:05:45,217 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:05:45,218 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:05:45,218 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:05:45,218 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:05:45,218 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:05:45,218 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:05:45,219 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:05:45,235 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-10-13 21:05:45,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 21:05:45,240 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:05:45,241 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:05:45,243 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:05:45,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:05:45,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1378298279, now seen corresponding path program 1 times [2019-10-13 21:05:45,258 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:05:45,258 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656304529] [2019-10-13 21:05:45,258 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:45,259 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:45,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:05:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:05:45,386 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 21:05:45,386 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656304529] [2019-10-13 21:05:45,387 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:05:45,387 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:05:45,388 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687371335] [2019-10-13 21:05:45,391 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:05:45,393 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:05:45,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:05:45,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:05:45,406 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-10-13 21:05:45,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:05:45,425 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2019-10-13 21:05:45,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:05:45,426 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-10-13 21:05:45,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:05:45,432 INFO L225 Difference]: With dead ends: 41 [2019-10-13 21:05:45,433 INFO L226 Difference]: Without dead ends: 19 [2019-10-13 21:05:45,435 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 21:05:45,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-13 21:05:45,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-10-13 21:05:45,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-13 21:05:45,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-10-13 21:05:45,469 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 14 [2019-10-13 21:05:45,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:05:45,470 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-10-13 21:05:45,470 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:05:45,470 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-10-13 21:05:45,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 21:05:45,471 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:05:45,471 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:05:45,472 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:05:45,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:05:45,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1297975765, now seen corresponding path program 1 times [2019-10-13 21:05:45,473 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:05:45,473 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998391585] [2019-10-13 21:05:45,473 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:45,473 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:45,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:05:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:05:45,600 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 21:05:45,601 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998391585] [2019-10-13 21:05:45,602 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:05:45,602 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:05:45,602 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951132715] [2019-10-13 21:05:45,604 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:05:45,604 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:05:45,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:05:45,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:05:45,605 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 5 states. [2019-10-13 21:05:45,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:05:45,676 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2019-10-13 21:05:45,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:05:45,676 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-10-13 21:05:45,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:05:45,678 INFO L225 Difference]: With dead ends: 27 [2019-10-13 21:05:45,678 INFO L226 Difference]: Without dead ends: 25 [2019-10-13 21:05:45,679 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:05:45,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-13 21:05:45,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2019-10-13 21:05:45,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-13 21:05:45,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2019-10-13 21:05:45,687 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 14 [2019-10-13 21:05:45,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:05:45,687 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2019-10-13 21:05:45,687 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:05:45,687 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2019-10-13 21:05:45,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 21:05:45,688 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:05:45,689 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:05:45,689 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:05:45,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:05:45,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1296128723, now seen corresponding path program 1 times [2019-10-13 21:05:45,690 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:05:45,690 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615174319] [2019-10-13 21:05:45,691 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:45,691 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:45,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:05:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:05:45,777 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 21:05:45,778 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615174319] [2019-10-13 21:05:45,778 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:05:45,778 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:05:45,778 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171393331] [2019-10-13 21:05:45,779 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:05:45,779 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:05:45,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:05:45,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:05:45,780 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 3 states. [2019-10-13 21:05:45,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:05:45,829 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2019-10-13 21:05:45,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:05:45,831 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-10-13 21:05:45,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:05:45,837 INFO L225 Difference]: With dead ends: 48 [2019-10-13 21:05:45,837 INFO L226 Difference]: Without dead ends: 31 [2019-10-13 21:05:45,838 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 21:05:45,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-13 21:05:45,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2019-10-13 21:05:45,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-13 21:05:45,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2019-10-13 21:05:45,850 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 14 [2019-10-13 21:05:45,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:05:45,851 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2019-10-13 21:05:45,851 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:05:45,851 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2019-10-13 21:05:45,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-13 21:05:45,852 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:05:45,852 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:05:45,853 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:05:45,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:05:45,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1388961987, now seen corresponding path program 1 times [2019-10-13 21:05:45,853 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:05:45,854 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219739583] [2019-10-13 21:05:45,854 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:45,854 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:45,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:05:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:05:45,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:05:45,953 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219739583] [2019-10-13 21:05:45,954 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394859368] [2019-10-13 21:05:45,954 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 21:05:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:05:46,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-13 21:05:46,010 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:05:46,106 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-10-13 21:05:46,107 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:05:46,111 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:05:46,112 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 21:05:46,112 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2019-10-13 21:05:46,145 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:05:46,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:05:46,165 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:05:46,171 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:05:46,173 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:05:46,175 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:06:00,488 WARN L191 SmtUtils]: Spent 14.28 s on a formula simplification. DAG size of input: 30 DAG size of output: 19 [2019-10-13 21:06:00,523 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:06:00,539 WARN L225 Elim1Store]: Array PQE input equivalent to true [2019-10-13 21:06:00,539 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:06:00,554 INFO L567 ElimStorePlain]: treesize reduction 6, result has 80.6 percent of original size [2019-10-13 21:06:00,558 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2019-10-13 21:06:00,567 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2019-10-13 21:06:00,569 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2019-10-13 21:06:00,575 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:06:00,576 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2019-10-13 21:06:00,591 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:06:00,592 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 21:06:00,593 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:63, output treesize:22 [2019-10-13 21:06:00,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:06:00,639 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1050071771] [2019-10-13 21:06:00,645 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 16 [2019-10-13 21:06:00,694 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 21:06:00,694 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 21:06:00,761 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 21:06:00,763 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 19 variables. [2019-10-13 21:06:00,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:06:00,767 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 21:06:00,801 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-13 21:06:00,801 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 21:06:00,802 INFO L553 sIntCurrentIteration]: We unified 14 AI predicates to 14 [2019-10-13 21:06:00,803 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 21:06:00,803 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-13 21:06:00,804 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 6, 6] total 11 [2019-10-13 21:06:00,804 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600425066] [2019-10-13 21:06:00,805 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:06:00,805 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 21:06:00,806 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 21:06:00,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:06:00,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:06:00,806 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 2 states. [2019-10-13 21:06:00,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:06:00,809 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-10-13 21:06:00,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:06:00,809 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-10-13 21:06:00,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:06:00,809 INFO L225 Difference]: With dead ends: 25 [2019-10-13 21:06:00,810 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 21:06:00,810 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 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 21:06:00,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 21:06:00,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 21:06:00,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 21:06:00,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 21:06:00,811 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-10-13 21:06:00,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:06:00,811 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 21:06:00,811 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:06:00,812 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 21:06:00,812 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 21:06:01,017 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:06:01,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 21:06:01,048 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:06:01,048 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:06:01,049 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:06:01,049 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:06:01,049 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 21:06:01,049 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:06:01,049 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:06:01,049 INFO L443 ceAbstractionStarter]: For program point L31(line 31) no Hoare annotation was computed. [2019-10-13 21:06:01,049 INFO L439 ceAbstractionStarter]: At program point L31-2(line 31) the Hoare annotation is: false [2019-10-13 21:06:01,050 INFO L443 ceAbstractionStarter]: For program point L31-3(line 31) no Hoare annotation was computed. [2019-10-13 21:06:01,050 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 18 34) no Hoare annotation was computed. [2019-10-13 21:06:01,050 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 18 34) no Hoare annotation was computed. [2019-10-13 21:06:01,050 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 18 34) the Hoare annotation is: true [2019-10-13 21:06:01,050 INFO L443 ceAbstractionStarter]: For program point L30-2(lines 30 32) no Hoare annotation was computed. [2019-10-13 21:06:01,050 INFO L439 ceAbstractionStarter]: At program point L30-3(lines 30 32) the Hoare annotation is: false [2019-10-13 21:06:01,051 INFO L443 ceAbstractionStarter]: For program point L30-4(lines 30 32) no Hoare annotation was computed. [2019-10-13 21:06:01,051 INFO L439 ceAbstractionStarter]: At program point L24-2(lines 24 28) the Hoare annotation is: false [2019-10-13 21:06:01,051 INFO L443 ceAbstractionStarter]: For program point L24-3(lines 24 28) no Hoare annotation was computed. [2019-10-13 21:06:01,051 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2019-10-13 21:06:01,051 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2019-10-13 21:06:01,052 INFO L443 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2019-10-13 21:06:01,052 INFO L443 ceAbstractionStarter]: For program point L12(lines 12 14) no Hoare annotation was computed. [2019-10-13 21:06:01,052 INFO L443 ceAbstractionStarter]: For program point L12-2(lines 10 16) no Hoare annotation was computed. [2019-10-13 21:06:01,052 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2019-10-13 21:06:01,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 09:06:01 BoogieIcfgContainer [2019-10-13 21:06:01,070 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 21:06:01,072 INFO L168 Benchmark]: Toolchain (without parser) took 16689.69 ms. Allocated memory was 139.5 MB in the beginning and 233.3 MB in the end (delta: 93.8 MB). Free memory was 103.6 MB in the beginning and 185.5 MB in the end (delta: -81.9 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2019-10-13 21:06:01,073 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 139.5 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-13 21:06:01,074 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.79 ms. Allocated memory is still 139.5 MB. Free memory was 103.4 MB in the beginning and 93.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-10-13 21:06:01,075 INFO L168 Benchmark]: Boogie Preprocessor took 111.43 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 93.4 MB in the beginning and 180.6 MB in the end (delta: -87.3 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2019-10-13 21:06:01,076 INFO L168 Benchmark]: RCFGBuilder took 314.24 ms. Allocated memory is still 202.9 MB. Free memory was 180.6 MB in the beginning and 167.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2019-10-13 21:06:01,077 INFO L168 Benchmark]: TraceAbstraction took 15948.46 ms. Allocated memory was 202.9 MB in the beginning and 233.3 MB in the end (delta: 30.4 MB). Free memory was 166.8 MB in the beginning and 185.5 MB in the end (delta: -18.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2019-10-13 21:06:01,081 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 139.5 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 310.79 ms. Allocated memory is still 139.5 MB. Free memory was 103.4 MB in the beginning and 93.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.43 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 93.4 MB in the beginning and 180.6 MB in the end (delta: -87.3 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 314.24 ms. Allocated memory is still 202.9 MB. Free memory was 180.6 MB in the beginning and 167.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15948.46 ms. Allocated memory was 202.9 MB in the beginning and 233.3 MB in the end (delta: 30.4 MB). Free memory was 166.8 MB in the beginning and 185.5 MB in the end (delta: -18.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: 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: 30]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Result: SAFE, OverallTime: 15.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 68 SDtfs, 10 SDslu, 65 SDs, 0 SdLazy, 23 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=3, 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, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 12 PreInvPairs, 12 NumberOfFragments, 8 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 14.8s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 2571 SizeOfPredicates, 8 NumberOfNonLiveVariables, 65 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 122, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9285714285714286, AVG_VARS_REMOVED_DURING_WEAKENING: 0.8571428571428571, AVG_WEAKENED_CONJUNCTS: 0.42857142857142855, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...