/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_running-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:12:53,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:12:53,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:12:54,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 23:12:54,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 23:12:54,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 23:12:54,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 23:12:54,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 23:12:54,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 23:12:54,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 23:12:54,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 23:12:54,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 23:12:54,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 23:12:54,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 23:12:54,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 23:12:54,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 23:12:54,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 23:12:54,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 23:12:54,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 23:12:54,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 23:12:54,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 23:12:54,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 23:12:54,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 23:12:54,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 23:12:54,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 23:12:54,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 23:12:54,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 23:12:54,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 23:12:54,077 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 23:12:54,106 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:12:54,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:12:54,115 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:12:54,117 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:12:54,117 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:12:54,117 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:12:54,117 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:12:54,117 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:12:54,118 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:12:54,118 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:12:54,118 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:12:54,118 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:12:54,118 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:12:54,119 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:12:54,119 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:12:54,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:12:54,120 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:12:54,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:12:54,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:12:54,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:12:54,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:12:54,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:12:54,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:12:54,121 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:12:54,122 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:12:54,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:12:54,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:12:54,122 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:12:54,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:12:54,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:12:54,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:12:54,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:12:54,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:12:54,123 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:12:54,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:12:54,124 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:12:54,124 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:12:54,124 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:12:54,406 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:12:54,419 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:12:54,422 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:12:54,424 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:12:54,424 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:12:54,425 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_running-1.i [2019-11-23 23:12:54,484 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbc3ae509/03e70871cc5546c0a7580228a9b80aa3/FLAG21616ede4 [2019-11-23 23:12:54,956 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:12:54,957 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_running-1.i [2019-11-23 23:12:54,964 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbc3ae509/03e70871cc5546c0a7580228a9b80aa3/FLAG21616ede4 [2019-11-23 23:12:55,358 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbc3ae509/03e70871cc5546c0a7580228a9b80aa3 [2019-11-23 23:12:55,370 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:12:55,375 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:12:55,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:12:55,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:12:55,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:12:55,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:12:55" (1/1) ... [2019-11-23 23:12:55,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac3073a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:55, skipping insertion in model container [2019-11-23 23:12:55,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:12:55" (1/1) ... [2019-11-23 23:12:55,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:12:55,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:12:55,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:12:55,580 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:12:55,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:12:55,618 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:12:55,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:55 WrapperNode [2019-11-23 23:12:55,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:12:55,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:12:55,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:12:55,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:12:55,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:55" (1/1) ... [2019-11-23 23:12:55,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:55" (1/1) ... [2019-11-23 23:12:55,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:12:55,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:12:55,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:12:55,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:12:55,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:55" (1/1) ... [2019-11-23 23:12:55,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:55" (1/1) ... [2019-11-23 23:12:55,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:55" (1/1) ... [2019-11-23 23:12:55,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:55" (1/1) ... [2019-11-23 23:12:55,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:55" (1/1) ... [2019-11-23 23:12:55,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:55" (1/1) ... [2019-11-23 23:12:55,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:55" (1/1) ... [2019-11-23 23:12:55,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:12:55,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:12:55,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:12:55,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:12:55,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:55" (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 23:12:55,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 23:12:55,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:12:55,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:12:55,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 23:12:55,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 23:12:55,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 23:12:56,343 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:12:56,343 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-23 23:12:56,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:12:56 BoogieIcfgContainer [2019-11-23 23:12:56,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:12:56,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:12:56,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:12:56,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:12:56,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:12:55" (1/3) ... [2019-11-23 23:12:56,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eaf1bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:12:56, skipping insertion in model container [2019-11-23 23:12:56,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:12:55" (2/3) ... [2019-11-23 23:12:56,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eaf1bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:12:56, skipping insertion in model container [2019-11-23 23:12:56,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:12:56" (3/3) ... [2019-11-23 23:12:56,353 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_running-1.i [2019-11-23 23:12:56,361 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:12:56,367 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:12:56,375 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:12:56,395 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:12:56,396 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:12:56,396 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:12:56,396 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:12:56,396 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:12:56,397 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:12:56,397 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:12:56,397 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:12:56,409 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-23 23:12:56,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-23 23:12:56,415 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:12:56,416 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-23 23:12:56,416 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:12:56,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:12:56,421 INFO L82 PathProgramCache]: Analyzing trace with hash -761036253, now seen corresponding path program 1 times [2019-11-23 23:12:56,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:12:56,429 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235440545] [2019-11-23 23:12:56,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:12:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:12:56,576 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 23:12:56,577 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235440545] [2019-11-23 23:12:56,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:12:56,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 23:12:56,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273898479] [2019-11-23 23:12:56,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:12:56,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:12:56,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:12:56,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:12:56,607 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-11-23 23:12:56,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:12:56,673 INFO L93 Difference]: Finished difference Result 19 states and 27 transitions. [2019-11-23 23:12:56,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:12:56,676 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-23 23:12:56,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:12:56,690 INFO L225 Difference]: With dead ends: 19 [2019-11-23 23:12:56,690 INFO L226 Difference]: Without dead ends: 10 [2019-11-23 23:12:56,693 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 23:12:56,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-23 23:12:56,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-23 23:12:56,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-23 23:12:56,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2019-11-23 23:12:56,731 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 6 [2019-11-23 23:12:56,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:12:56,732 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-23 23:12:56,732 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:12:56,732 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2019-11-23 23:12:56,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-23 23:12:56,733 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:12:56,733 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:12:56,733 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:12:56,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:12:56,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1691771550, now seen corresponding path program 1 times [2019-11-23 23:12:56,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:12:56,734 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738066960] [2019-11-23 23:12:56,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:12:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:12:56,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-23 23:12:56,825 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738066960] [2019-11-23 23:12:56,825 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124813145] [2019-11-23 23:12:56,825 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 23:12:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:12:56,896 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 23:12:56,901 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:12:56,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-23 23:12:56,934 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:12:56,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-23 23:12:56,964 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [500801017] [2019-11-23 23:12:56,993 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-11-23 23:12:56,993 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 23:12:57,009 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 23:12:57,016 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 23:12:57,017 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 23:12:58,802 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 131 [2019-11-23 23:13:08,549 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2019-11-23 23:13:30,858 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 259 [2019-11-23 23:13:30,989 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2019-11-23 23:13:36,651 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 276 [2019-11-23 23:13:47,238 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 303 DAG size of output: 301 [2019-11-23 23:13:51,251 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 311 DAG size of output: 310 [2019-11-23 23:13:51,363 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 311 DAG size of output: 306 [2019-11-23 23:13:53,936 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 316 DAG size of output: 314 [2019-11-23 23:13:54,171 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 317 DAG size of output: 316 [2019-11-23 23:13:54,394 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 320 DAG size of output: 320 [2019-11-23 23:13:56,683 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 324 [2019-11-23 23:13:56,805 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 325 DAG size of output: 324 [2019-11-23 23:13:58,949 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 333 [2019-11-23 23:13:59,065 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 328 [2019-11-23 23:14:01,455 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2019-11-23 23:14:01,567 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 333 [2019-11-23 23:14:03,824 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 340 DAG size of output: 337 [2019-11-23 23:14:03,958 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 337 DAG size of output: 333 [2019-11-23 23:14:04,093 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2019-11-23 23:14:04,200 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 335 DAG size of output: 335 [2019-11-23 23:14:06,734 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2019-11-23 23:14:06,853 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 340 DAG size of output: 339 [2019-11-23 23:14:09,709 WARN L192 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 342 [2019-11-23 23:14:10,056 WARN L192 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 343 DAG size of output: 342 [2019-11-23 23:14:12,658 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 345 [2019-11-23 23:14:12,779 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 346 DAG size of output: 346 [2019-11-23 23:14:15,297 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 350 [2019-11-23 23:14:15,427 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 350 [2019-11-23 23:14:17,978 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 358 DAG size of output: 357 [2019-11-23 23:14:18,102 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 358 DAG size of output: 354 [2019-11-23 23:14:20,753 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2019-11-23 23:14:20,882 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 359 DAG size of output: 358 [2019-11-23 23:14:23,598 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 361 [2019-11-23 23:14:23,735 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 360 [2019-11-23 23:14:26,347 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 369 DAG size of output: 367 [2019-11-23 23:14:26,482 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 368 DAG size of output: 363