/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/relax-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:59:48,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:59:48,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:59:48,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:59:48,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:59:48,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:59:48,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:59:48,833 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:59:48,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:59:48,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:59:48,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:59:48,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 22:59:48,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 22:59:48,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 22:59:48,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 22:59:48,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 22:59:48,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 22:59:48,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 22:59:48,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 22:59:48,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 22:59:48,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 22:59:48,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 22:59:48,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 22:59:48,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 22:59:48,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 22:59:48,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 22:59:48,883 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 22:59:48,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 22:59:48,886 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 22:59:48,909 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:59:48,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:59:48,910 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 22:59:48,910 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 22:59:48,910 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 22:59:48,911 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 22:59:48,911 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 22:59:48,911 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 22:59:48,911 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 22:59:48,911 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 22:59:48,912 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 22:59:48,913 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 22:59:48,913 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 22:59:48,913 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 22:59:48,913 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 22:59:48,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:59:48,914 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:59:48,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:59:48,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:59:48,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:59:48,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:59:48,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:59:48,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:59:48,915 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:59:48,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:59:48,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:59:48,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:59:48,916 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:59:48,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:59:48,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:59:48,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:59:48,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:59:48,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:59:48,918 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 22:59:48,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:59:48,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:59:48,919 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:59:48,919 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 22:59:49,191 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:59:49,210 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:59:49,214 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:59:49,215 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:59:49,215 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:59:49,216 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/relax-2.i [2019-11-23 22:59:49,293 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2af1f147c/d2b6395d5ed24145a10bda72227cce3d/FLAG7578f9580 [2019-11-23 22:59:49,836 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:59:49,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/relax-2.i [2019-11-23 22:59:49,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2af1f147c/d2b6395d5ed24145a10bda72227cce3d/FLAG7578f9580 [2019-11-23 22:59:50,148 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2af1f147c/d2b6395d5ed24145a10bda72227cce3d [2019-11-23 22:59:50,156 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:59:50,157 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:59:50,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:59:50,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:59:50,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:59:50,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:59:50" (1/1) ... [2019-11-23 22:59:50,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b6fa42f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:59:50, skipping insertion in model container [2019-11-23 22:59:50,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:59:50" (1/1) ... [2019-11-23 22:59:50,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:59:50,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:59:50,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:59:50,716 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:59:50,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:59:50,828 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:59:50,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:59:50 WrapperNode [2019-11-23 22:59:50,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:59:50,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:59:50,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:59:50,830 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:59:50,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:59:50" (1/1) ... [2019-11-23 22:59:50,855 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:59:50" (1/1) ... [2019-11-23 22:59:50,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:59:50,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:59:50,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:59:50,899 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:59:50,910 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:59:50" (1/1) ... [2019-11-23 22:59:50,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:59:50" (1/1) ... [2019-11-23 22:59:50,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:59:50" (1/1) ... [2019-11-23 22:59:50,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:59:50" (1/1) ... [2019-11-23 22:59:50,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:59:50" (1/1) ... [2019-11-23 22:59:50,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:59:50" (1/1) ... [2019-11-23 22:59:50,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:59:50" (1/1) ... [2019-11-23 22:59:50,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:59:50,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:59:50,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:59:50,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:59:50,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:59:50" (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 22:59:50,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 22:59:50,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 22:59:50,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-23 22:59:50,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:59:50,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:59:51,599 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:59:51,599 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-23 22:59:51,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:59:51 BoogieIcfgContainer [2019-11-23 22:59:51,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:59:51,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:59:51,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:59:51,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:59:51,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:59:50" (1/3) ... [2019-11-23 22:59:51,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c1b4a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:59:51, skipping insertion in model container [2019-11-23 22:59:51,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:59:50" (2/3) ... [2019-11-23 22:59:51,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c1b4a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:59:51, skipping insertion in model container [2019-11-23 22:59:51,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:59:51" (3/3) ... [2019-11-23 22:59:51,610 INFO L109 eAbstractionObserver]: Analyzing ICFG relax-2.i [2019-11-23 22:59:51,620 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:59:51,628 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-23 22:59:51,641 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-23 22:59:51,668 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:59:51,668 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:59:51,668 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:59:51,669 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:59:51,669 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:59:51,669 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:59:51,670 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:59:51,670 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:59:51,687 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-23 22:59:51,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 22:59:51,695 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:59:51,696 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:59:51,697 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:59:51,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:59:51,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1919095170, now seen corresponding path program 1 times [2019-11-23 22:59:51,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:59:51,715 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25707731] [2019-11-23 22:59:51,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:59:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:59:51,911 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 22:59:51,912 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25707731] [2019-11-23 22:59:51,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:59:51,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 22:59:51,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860556975] [2019-11-23 22:59:51,918 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:59:51,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:59:51,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:59:51,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:59:51,936 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2019-11-23 22:59:52,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:59:52,022 INFO L93 Difference]: Finished difference Result 54 states and 77 transitions. [2019-11-23 22:59:52,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:59:52,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-23 22:59:52,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:59:52,043 INFO L225 Difference]: With dead ends: 54 [2019-11-23 22:59:52,043 INFO L226 Difference]: Without dead ends: 35 [2019-11-23 22:59:52,052 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:59:52,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-23 22:59:52,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2019-11-23 22:59:52,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-23 22:59:52,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2019-11-23 22:59:52,085 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 8 [2019-11-23 22:59:52,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:59:52,086 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2019-11-23 22:59:52,086 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:59:52,086 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2019-11-23 22:59:52,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-23 22:59:52,087 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:59:52,087 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:59:52,088 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:59:52,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:59:52,088 INFO L82 PathProgramCache]: Analyzing trace with hash -471450338, now seen corresponding path program 1 times [2019-11-23 22:59:52,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:59:52,089 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36929684] [2019-11-23 22:59:52,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:59:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:59:52,254 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 22:59:52,255 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36929684] [2019-11-23 22:59:52,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:59:52,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 22:59:52,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832413088] [2019-11-23 22:59:52,257 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 22:59:52,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:59:52,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 22:59:52,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:59:52,260 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand 5 states. [2019-11-23 22:59:52,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:59:52,432 INFO L93 Difference]: Finished difference Result 64 states and 84 transitions. [2019-11-23 22:59:52,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-23 22:59:52,435 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-11-23 22:59:52,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:59:52,436 INFO L225 Difference]: With dead ends: 64 [2019-11-23 22:59:52,437 INFO L226 Difference]: Without dead ends: 46 [2019-11-23 22:59:52,441 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:59:52,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-23 22:59:52,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2019-11-23 22:59:52,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-11-23 22:59:52,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 57 transitions. [2019-11-23 22:59:52,451 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 57 transitions. Word has length 9 [2019-11-23 22:59:52,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:59:52,452 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 57 transitions. [2019-11-23 22:59:52,452 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 22:59:52,453 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 57 transitions. [2019-11-23 22:59:52,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-23 22:59:52,453 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:59:52,454 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:59:52,454 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:59:52,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:59:52,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1262071509, now seen corresponding path program 1 times [2019-11-23 22:59:52,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:59:52,455 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694143858] [2019-11-23 22:59:52,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:59:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:59:52,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:59:52,810 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694143858] [2019-11-23 22:59:52,811 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904866284] [2019-11-23 22:59:52,811 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 22:59:52,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:59:52,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-23 22:59:52,900 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:59:52,978 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:59:53,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 22:59:53,003 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 22:59:53,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 22:59:53,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:59:53,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [6] total 11 [2019-11-23 22:59:53,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356864362] [2019-11-23 22:59:53,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-23 22:59:53,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:59:53,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-23 22:59:53,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-11-23 22:59:53,081 INFO L87 Difference]: Start difference. First operand 41 states and 57 transitions. Second operand 8 states. [2019-11-23 22:59:53,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:59:53,379 INFO L93 Difference]: Finished difference Result 98 states and 131 transitions. [2019-11-23 22:59:53,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-23 22:59:53,379 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2019-11-23 22:59:53,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:59:53,381 INFO L225 Difference]: With dead ends: 98 [2019-11-23 22:59:53,381 INFO L226 Difference]: Without dead ends: 85 [2019-11-23 22:59:53,382 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2019-11-23 22:59:53,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-11-23 22:59:53,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 47. [2019-11-23 22:59:53,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-23 22:59:53,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 67 transitions. [2019-11-23 22:59:53,393 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 67 transitions. Word has length 10 [2019-11-23 22:59:53,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:59:53,394 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 67 transitions. [2019-11-23 22:59:53,394 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-23 22:59:53,394 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 67 transitions. [2019-11-23 22:59:53,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-23 22:59:53,395 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:59:53,395 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:59:53,600 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:59:53,600 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:59:53,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:59:53,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1765856126, now seen corresponding path program 1 times [2019-11-23 22:59:53,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:59:53,601 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261995509] [2019-11-23 22:59:53,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:59:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:59:53,723 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 22:59:53,723 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261995509] [2019-11-23 22:59:53,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:59:53,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 22:59:53,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876383159] [2019-11-23 22:59:53,724 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 22:59:53,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:59:53,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 22:59:53,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:59:53,728 INFO L87 Difference]: Start difference. First operand 47 states and 67 transitions. Second operand 5 states. [2019-11-23 22:59:53,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:59:53,805 INFO L93 Difference]: Finished difference Result 58 states and 77 transitions. [2019-11-23 22:59:53,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:59:53,808 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-23 22:59:53,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:59:53,809 INFO L225 Difference]: With dead ends: 58 [2019-11-23 22:59:53,809 INFO L226 Difference]: Without dead ends: 43 [2019-11-23 22:59:53,810 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:59:53,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-23 22:59:53,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2019-11-23 22:59:53,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-23 22:59:53,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 54 transitions. [2019-11-23 22:59:53,822 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 54 transitions. Word has length 10 [2019-11-23 22:59:53,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:59:53,823 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 54 transitions. [2019-11-23 22:59:53,823 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 22:59:53,823 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2019-11-23 22:59:53,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-23 22:59:53,826 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:59:53,826 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:59:53,826 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:59:53,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:59:53,827 INFO L82 PathProgramCache]: Analyzing trace with hash -329541465, now seen corresponding path program 1 times [2019-11-23 22:59:53,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:59:53,827 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815506257] [2019-11-23 22:59:53,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:59:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:59:54,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:59:54,022 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815506257] [2019-11-23 22:59:54,022 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317996939] [2019-11-23 22:59:54,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:59:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:59:54,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 32 conjunts are in the unsatisfiable core [2019-11-23 22:59:54,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:59:54,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:59:54,186 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 22:59:54,202 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:59:54,339 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:59:54,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:59:54,574 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2016148746] [2019-11-23 22:59:54,615 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-11-23 22:59:54,615 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 22:59:54,621 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 22:59:54,632 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 22:59:54,633 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 22:59:56,101 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 140 [2019-11-23 22:59:56,641 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2019-11-23 22:59:56,836 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 156 [2019-11-23 22:59:57,025 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 155 [2019-11-23 22:59:57,184 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2019-11-23 22:59:58,132 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 162 [2019-11-23 22:59:59,916 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2019-11-23 23:00:00,044 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 191 [2019-11-23 23:00:01,290 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 196 [2019-11-23 23:00:07,097 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2019-11-23 23:00:11,955 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 239 [2019-11-23 23:00:12,229 WARN L192 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 237 [2019-11-23 23:00:14,044 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 248 [2019-11-23 23:00:14,154 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 245 [2019-11-23 23:00:17,865 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 253 [2019-11-23 23:00:19,670 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 260 [2019-11-23 23:00:19,832 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2019-11-23 23:00:19,940 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 263 [2019-11-23 23:00:22,120 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 267 [2019-11-23 23:00:22,251 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 268 [2019-11-23 23:00:24,514 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2019-11-23 23:00:24,662 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 268 [2019-11-23 23:00:26,917 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 276 [2019-11-23 23:00:27,043 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 272 [2019-11-23 23:00:29,273 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 280 DAG size of output: 277 [2019-11-23 23:00:29,395 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 276 [2019-11-23 23:00:31,695 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2019-11-23 23:00:31,826 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 280 [2019-11-23 23:00:34,035 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 285 [2019-11-23 23:00:34,165 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 281 [2019-11-23 23:00:34,392 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 283 [2019-11-23 23:00:36,795 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 308 DAG size of output: 306 [2019-11-23 23:00:36,944 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 304 [2019-11-23 23:00:40,153 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2019-11-23 23:00:40,309 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 309 [2019-11-23 23:00:43,270 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2019-11-23 23:00:43,429 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 311 [2019-11-23 23:00:43,591 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 312 [2019-11-23 23:00:43,738 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 313 DAG size of output: 311 [2019-11-23 23:00:43,896 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2019-11-23 23:00:44,060 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 313 [2019-11-23 23:00:44,235 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2019-11-23 23:00:44,395 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 317 DAG size of output: 317 [2019-11-23 23:00:47,757 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 321 [2019-11-23 23:00:47,932 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 322 DAG size of output: 322 [2019-11-23 23:00:51,610 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 326 [2019-11-23 23:00:51,770 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 327 DAG size of output: 326 [2019-11-23 23:00:54,854 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 336 DAG size of output: 331 [2019-11-23 23:00:55,038 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 330 [2019-11-23 23:00:58,425 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2019-11-23 23:00:58,597 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 335 DAG size of output: 334 [2019-11-23 23:01:01,981 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 342 DAG size of output: 339 [2019-11-23 23:01:02,162 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 340 DAG size of output: 336 [2019-11-23 23:01:02,349 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 338 [2019-11-23 23:01:02,518 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 339 DAG size of output: 339 [2019-11-23 23:01:06,124 WARN L192 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2019-11-23 23:01:06,339 WARN L192 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 344 DAG size of output: 340 [2019-11-23 23:01:06,506 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2019-11-23 23:01:06,655 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 341 DAG size of output: 341 [2019-11-23 23:01:10,217 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 345 [2019-11-23 23:01:10,389 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 346 DAG size of output: 346 [2019-11-23 23:01:14,077 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 350 [2019-11-23 23:01:14,256 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 349 [2019-11-23 23:01:17,835 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 354 DAG size of output: 353 [2019-11-23 23:01:18,041 WARN L192 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 354 DAG size of output: 351 [2019-11-23 23:01:22,039 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 354 [2019-11-23 23:01:22,247 WARN L192 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 355 DAG size of output: 355