/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/array-examples/standard_minInArray_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:11:17,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:11:17,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:11:17,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 23:11:17,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 23:11:17,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 23:11:17,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 23:11:17,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 23:11:17,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 23:11:17,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 23:11:17,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 23:11:17,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 23:11:17,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 23:11:17,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 23:11:17,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 23:11:17,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 23:11:17,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 23:11:17,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 23:11:17,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 23:11:17,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 23:11:17,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 23:11:17,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 23:11:17,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 23:11:17,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 23:11:17,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 23:11:17,929 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-23 23:11:17,945 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:11:17,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:11:17,946 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:11:17,946 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:11:17,947 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:11:17,947 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:11:17,947 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:11:17,947 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:11:17,948 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:11:17,948 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:11:17,948 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:11:17,948 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:11:17,948 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:11:17,949 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:11:17,949 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:11:17,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:11:17,950 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:11:17,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:11:17,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:11:17,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:11:17,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:11:17,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:11:17,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:11:17,951 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:11:17,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:11:17,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:11:17,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:11:17,952 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:11:17,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:11:17,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:11:17,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:11:17,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:11:17,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:11:17,953 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:11:17,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:11:17,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:11:17,954 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:11:17,954 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:11:18,309 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:11:18,333 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:11:18,336 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:11:18,338 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:11:18,339 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:11:18,339 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_minInArray_ground-2.i [2019-11-23 23:11:18,398 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd021288b/33c3414249504f308cff90dff41174b3/FLAGed33762e0 [2019-11-23 23:11:18,772 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:11:18,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_minInArray_ground-2.i [2019-11-23 23:11:18,779 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd021288b/33c3414249504f308cff90dff41174b3/FLAGed33762e0 [2019-11-23 23:11:19,159 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd021288b/33c3414249504f308cff90dff41174b3 [2019-11-23 23:11:19,168 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:11:19,169 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:11:19,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:11:19,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:11:19,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:11:19,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:11:19" (1/1) ... [2019-11-23 23:11:19,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a1f63e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:11:19, skipping insertion in model container [2019-11-23 23:11:19,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:11:19" (1/1) ... [2019-11-23 23:11:19,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:11:19,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:11:19,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:11:19,399 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:11:19,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:11:19,438 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:11:19,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:11:19 WrapperNode [2019-11-23 23:11:19,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:11:19,439 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:11:19,439 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:11:19,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:11:19,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:11:19" (1/1) ... [2019-11-23 23:11:19,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:11:19" (1/1) ... [2019-11-23 23:11:19,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:11:19,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:11:19,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:11:19,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:11:19,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:11:19" (1/1) ... [2019-11-23 23:11:19,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:11:19" (1/1) ... [2019-11-23 23:11:19,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:11:19" (1/1) ... [2019-11-23 23:11:19,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:11:19" (1/1) ... [2019-11-23 23:11:19,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:11:19" (1/1) ... [2019-11-23 23:11:19,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:11:19" (1/1) ... [2019-11-23 23:11:19,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:11:19" (1/1) ... [2019-11-23 23:11:19,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:11:19,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:11:19,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:11:19,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:11:19,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:11:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:11:19,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 23:11:19,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:11:19,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:11:19,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 23:11:19,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 23:11:19,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 23:11:20,108 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:11:20,108 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-23 23:11:20,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:11:20 BoogieIcfgContainer [2019-11-23 23:11:20,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:11:20,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:11:20,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:11:20,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:11:20,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:11:19" (1/3) ... [2019-11-23 23:11:20,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457f0f8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:11:20, skipping insertion in model container [2019-11-23 23:11:20,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:11:19" (2/3) ... [2019-11-23 23:11:20,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457f0f8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:11:20, skipping insertion in model container [2019-11-23 23:11:20,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:11:20" (3/3) ... [2019-11-23 23:11:20,119 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_minInArray_ground-2.i [2019-11-23 23:11:20,128 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:11:20,136 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:11:20,146 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:11:20,166 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:11:20,166 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:11:20,166 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:11:20,166 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:11:20,166 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:11:20,166 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:11:20,167 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:11:20,167 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:11:20,179 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-23 23:11:20,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-23 23:11:20,185 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:11:20,186 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-23 23:11:20,186 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:11:20,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:11:20,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1505502803, now seen corresponding path program 1 times [2019-11-23 23:11:20,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:11:20,203 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643320802] [2019-11-23 23:11:20,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:11:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:11:20,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 23:11:20,364 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643320802] [2019-11-23 23:11:20,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:11:20,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 23:11:20,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238141001] [2019-11-23 23:11:20,371 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:11:20,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:11:20,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:11:20,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:11:20,390 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-11-23 23:11:20,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:11:20,430 INFO L93 Difference]: Finished difference Result 18 states and 25 transitions. [2019-11-23 23:11:20,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:11:20,432 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-23 23:11:20,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:11:20,442 INFO L225 Difference]: With dead ends: 18 [2019-11-23 23:11:20,443 INFO L226 Difference]: Without dead ends: 10 [2019-11-23 23:11:20,446 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:11:20,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-23 23:11:20,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-23 23:11:20,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-23 23:11:20,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2019-11-23 23:11:20,484 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 6 [2019-11-23 23:11:20,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:11:20,484 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-23 23:11:20,484 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:11:20,485 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2019-11-23 23:11:20,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 23:11:20,485 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:11:20,485 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:11:20,486 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:11:20,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:11:20,486 INFO L82 PathProgramCache]: Analyzing trace with hash -445762107, now seen corresponding path program 1 times [2019-11-23 23:11:20,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:11:20,487 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310427249] [2019-11-23 23:11:20,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:11:20,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:11:20,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 23:11:20,565 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310427249] [2019-11-23 23:11:20,567 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508286015] [2019-11-23 23:11:20,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 23:11:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:11:20,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 23:11:20,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:11:20,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 23:11:20,650 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:11:20,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 23:11:20,670 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1190517248] [2019-11-23 23:11:20,696 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-11-23 23:11:20,697 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 23:11:20,703 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 23:11:20,710 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 23:11:20,711 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 23:11:57,408 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 269 [2019-11-23 23:12:13,842 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 303 DAG size of output: 302 [2019-11-23 23:12:25,609 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 328 [2019-11-23 23:12:25,783 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 330 [2019-11-23 23:12:26,027 WARN L192 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 331 DAG size of output: 331 [2019-11-23 23:12:29,007 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 336 DAG size of output: 335 [2019-11-23 23:12:31,897 WARN L192 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 338 [2019-11-23 23:12:32,159 WARN L192 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 339 DAG size of output: 338 [2019-11-23 23:12:34,678 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 342 DAG size of output: 342 [2019-11-23 23:12:37,067 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2019-11-23 23:12:37,196 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 347 DAG size of output: 347 [2019-11-23 23:12:39,829 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 351 [2019-11-23 23:12:39,954 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 352 DAG size of output: 351 [2019-11-23 23:12:42,548 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 354 [2019-11-23 23:12:42,669 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 355 DAG size of output: 355 [2019-11-23 23:12:45,278 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 377 DAG size of output: 375 [2019-11-23 23:12:45,416 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 376 DAG size of output: 372 [2019-11-23 23:12:48,119 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 378 DAG size of output: 375 [2019-11-23 23:12:48,252 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 376 DAG size of output: 376 [2019-11-23 23:12:50,956 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 386 DAG size of output: 383 [2019-11-23 23:12:51,107 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 384 DAG size of output: 380