/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_init7_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:10:50,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:10:50,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:10:50,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 23:10:50,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 23:10:50,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 23:10:50,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 23:10:50,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 23:10:50,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 23:10:50,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 23:10:50,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 23:10:50,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 23:10:50,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 23:10:50,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 23:10:50,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 23:10:50,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 23:10:50,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 23:10:50,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 23:10:50,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 23:10:50,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 23:10:50,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 23:10:50,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 23:10:50,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 23:10:50,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 23:10:50,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-23 23:10:50,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-23 23:10:50,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-23 23:10:50,775 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-23 23:10:50,776 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-23 23:10:50,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-23 23:10:50,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-23 23:10:50,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-23 23:10:50,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-23 23:10:50,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-23 23:10:50,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-23 23:10:50,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-23 23:10:50,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-23 23:10:50,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-23 23:10:50,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 23:10:50,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 23:10:50,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 23:10:50,794 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 23:10:50,809 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:10:50,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:10:50,810 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:10:50,810 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:10:50,810 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:10:50,810 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:10:50,811 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:10:50,811 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:10:50,811 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:10:50,811 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:10:50,811 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:10:50,812 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:10:50,812 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:10:50,812 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:10:50,812 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:10:50,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:10:50,813 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:10:50,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:10:50,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:10:50,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:10:50,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:10:50,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:10:50,814 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:10:50,815 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:10:50,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:10:50,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:10:50,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:10:50,815 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:10:50,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:10:50,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:10:50,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:10:50,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:10:50,817 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:10:50,817 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:10:50,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:10:50,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:10:50,817 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:10:50,818 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:10:51,112 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:10:51,126 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:10:51,130 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:10:51,131 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:10:51,132 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:10:51,132 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init7_ground-2.i [2019-11-23 23:10:51,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbf5e76a8/68adf747818a4a51a0cfafbda29157f5/FLAG11fab1475 [2019-11-23 23:10:51,621 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:10:51,622 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init7_ground-2.i [2019-11-23 23:10:51,628 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbf5e76a8/68adf747818a4a51a0cfafbda29157f5/FLAG11fab1475 [2019-11-23 23:10:52,000 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbf5e76a8/68adf747818a4a51a0cfafbda29157f5 [2019-11-23 23:10:52,010 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:10:52,013 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:10:52,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:10:52,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:10:52,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:10:52,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:10:52" (1/1) ... [2019-11-23 23:10:52,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e44e17e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:52, skipping insertion in model container [2019-11-23 23:10:52,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:10:52" (1/1) ... [2019-11-23 23:10:52,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:10:52,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:10:52,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:10:52,242 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:10:52,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:10:52,302 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:10:52,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:52 WrapperNode [2019-11-23 23:10:52,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:10:52,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:10:52,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:10:52,303 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:10:52,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:52" (1/1) ... [2019-11-23 23:10:52,389 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:52" (1/1) ... [2019-11-23 23:10:52,408 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:10:52,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:10:52,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:10:52,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:10:52,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:52" (1/1) ... [2019-11-23 23:10:52,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:52" (1/1) ... [2019-11-23 23:10:52,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:52" (1/1) ... [2019-11-23 23:10:52,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:52" (1/1) ... [2019-11-23 23:10:52,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:52" (1/1) ... [2019-11-23 23:10:52,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:52" (1/1) ... [2019-11-23 23:10:52,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:52" (1/1) ... [2019-11-23 23:10:52,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:10:52,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:10:52,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:10:52,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:10:52,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:52" (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 23:10:52,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 23:10:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:10:52,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:10:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 23:10:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 23:10:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 23:10:52,915 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:10:52,915 INFO L284 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-23 23:10:52,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:10:52 BoogieIcfgContainer [2019-11-23 23:10:52,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:10:52,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:10:52,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:10:52,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:10:52,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:10:52" (1/3) ... [2019-11-23 23:10:52,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b462b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:10:52, skipping insertion in model container [2019-11-23 23:10:52,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:52" (2/3) ... [2019-11-23 23:10:52,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b462b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:10:52, skipping insertion in model container [2019-11-23 23:10:52,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:10:52" (3/3) ... [2019-11-23 23:10:52,925 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_init7_ground-2.i [2019-11-23 23:10:52,933 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:10:52,939 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:10:52,949 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:10:52,973 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:10:52,973 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:10:52,973 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:10:52,974 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:10:52,974 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:10:52,974 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:10:52,974 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:10:52,974 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:10:52,986 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-23 23:10:52,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-23 23:10:52,993 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:10:52,993 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:10:52,994 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:10:53,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:10:53,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1247934023, now seen corresponding path program 1 times [2019-11-23 23:10:53,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:10:53,010 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517579379] [2019-11-23 23:10:53,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:10:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:10:53,147 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 23:10:53,148 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517579379] [2019-11-23 23:10:53,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:10:53,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 23:10:53,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185504910] [2019-11-23 23:10:53,154 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:10:53,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:10:53,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:10:53,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:10:53,168 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2019-11-23 23:10:53,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:10:53,278 INFO L93 Difference]: Finished difference Result 33 states and 55 transitions. [2019-11-23 23:10:53,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:10:53,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-11-23 23:10:53,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:10:53,291 INFO L225 Difference]: With dead ends: 33 [2019-11-23 23:10:53,292 INFO L226 Difference]: Without dead ends: 20 [2019-11-23 23:10:53,297 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 23:10:53,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-23 23:10:53,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-23 23:10:53,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-23 23:10:53,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 27 transitions. [2019-11-23 23:10:53,330 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 27 transitions. Word has length 11 [2019-11-23 23:10:53,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:10:53,331 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 27 transitions. [2019-11-23 23:10:53,331 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:10:53,331 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions. [2019-11-23 23:10:53,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-23 23:10:53,332 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:10:53,333 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:10:53,333 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:10:53,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:10:53,334 INFO L82 PathProgramCache]: Analyzing trace with hash -561995005, now seen corresponding path program 1 times [2019-11-23 23:10:53,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:10:53,334 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550211732] [2019-11-23 23:10:53,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:10:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:10:53,406 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-23 23:10:53,406 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550211732] [2019-11-23 23:10:53,408 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342656480] [2019-11-23 23:10:53,408 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 23:10:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:10:53,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 23:10:53,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:10:53,508 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-23 23:10:53,509 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:10:53,533 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-23 23:10:53,534 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [603974083] [2019-11-23 23:10:53,557 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2019-11-23 23:10:53,557 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 23:10:53,563 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 23:10:53,570 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 23:10:53,571 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 23:11:06,322 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 203 [2019-11-23 23:11:06,458 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2019-11-23 23:11:06,573 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 206 [2019-11-23 23:11:30,610 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2019-11-23 23:11:59,631 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 327 [2019-11-23 23:12:04,643 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 337 DAG size of output: 334 [2019-11-23 23:12:07,538 WARN L192 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2019-11-23 23:12:07,713 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 338 DAG size of output: 337 [2019-11-23 23:12:10,387 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 341 DAG size of output: 340 [2019-11-23 23:12:13,166 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 344 DAG size of output: 341 [2019-11-23 23:12:13,383 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 343 DAG size of output: 343 [2019-11-23 23:12:15,923 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 354 DAG size of output: 350 [2019-11-23 23:12:16,037 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 347 [2019-11-23 23:12:18,799 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 350 [2019-11-23 23:12:18,933 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 349 [2019-11-23 23:12:19,164 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 352 DAG size of output: 351 [2019-11-23 23:12:21,907 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 363 DAG size of output: 362 [2019-11-23 23:12:22,031 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 363 DAG size of output: 359