/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/product-lines/email_spec4_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:03:32,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:03:32,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:03:32,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:03:32,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:03:32,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:03:32,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:03:32,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:03:32,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:03:32,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:03:32,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:03:32,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:03:32,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:03:32,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:03:32,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:03:32,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:03:32,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:03:32,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:03:32,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:03:32,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:03:32,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:03:32,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:03:32,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:03:32,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:03:32,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:03:32,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:03:32,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:03:32,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:03:32,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:03:32,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:03:32,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:03:32,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:03:32,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:03:32,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:03:32,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:03:32,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:03:32,901 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 [2019-11-24 05:03:32,935 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:03:32,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:03:32,936 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:03:32,937 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:03:32,937 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:03:32,937 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:03:32,937 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:03:32,937 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:03:32,941 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:03:32,941 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:03:32,941 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:03:32,941 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:03:32,941 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:03:32,942 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:03:32,942 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:03:32,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:03:32,943 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:03:32,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:03:32,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:03:32,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:03:32,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:03:32,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:03:32,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:03:32,945 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:03:32,945 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:03:32,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:03:32,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:03:32,946 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:03:32,946 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:03:32,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:03:32,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:03:32,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:03:32,947 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:03:32,948 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:03:32,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:03:32,948 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:03:32,948 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:03:32,948 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:03:33,215 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:03:33,229 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:03:33,232 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:03:33,234 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:03:33,234 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:03:33,235 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product27.cil.c [2019-11-24 05:03:33,313 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cb999b19/6cfc6798a12541fcabd597d1ba0aee50/FLAG3b97647bf [2019-11-24 05:03:33,944 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:03:33,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product27.cil.c [2019-11-24 05:03:33,965 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cb999b19/6cfc6798a12541fcabd597d1ba0aee50/FLAG3b97647bf [2019-11-24 05:03:34,208 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cb999b19/6cfc6798a12541fcabd597d1ba0aee50 [2019-11-24 05:03:34,216 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:03:34,218 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:03:34,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:03:34,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:03:34,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:03:34,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:03:34" (1/1) ... [2019-11-24 05:03:34,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c6f2f47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:34, skipping insertion in model container [2019-11-24 05:03:34,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:03:34" (1/1) ... [2019-11-24 05:03:34,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:03:34,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:03:35,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:03:35,091 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:03:35,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:03:35,387 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:03:35,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:35 WrapperNode [2019-11-24 05:03:35,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:03:35,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:03:35,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:03:35,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:03:35,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:35" (1/1) ... [2019-11-24 05:03:35,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:35" (1/1) ... [2019-11-24 05:03:35,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:03:35,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:03:35,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:03:35,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:03:35,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:35" (1/1) ... [2019-11-24 05:03:35,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:35" (1/1) ... [2019-11-24 05:03:35,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:35" (1/1) ... [2019-11-24 05:03:35,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:35" (1/1) ... [2019-11-24 05:03:35,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:35" (1/1) ... [2019-11-24 05:03:35,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:35" (1/1) ... [2019-11-24 05:03:35,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:35" (1/1) ... [2019-11-24 05:03:35,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:03:35,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:03:35,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:03:35,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:03:35,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:35" (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 [2019-11-24 05:03:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 05:03:35,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:03:35,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:03:35,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:03:35,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:03:52,743 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:03:52,743 INFO L284 CfgBuilder]: Removed 697 assume(true) statements. [2019-11-24 05:03:52,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:03:52 BoogieIcfgContainer [2019-11-24 05:03:52,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:03:52,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:03:52,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:03:52,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:03:52,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:03:34" (1/3) ... [2019-11-24 05:03:52,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2078ba99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:03:52, skipping insertion in model container [2019-11-24 05:03:52,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:03:35" (2/3) ... [2019-11-24 05:03:52,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2078ba99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:03:52, skipping insertion in model container [2019-11-24 05:03:52,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:03:52" (3/3) ... [2019-11-24 05:03:52,757 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product27.cil.c [2019-11-24 05:03:52,764 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:03:52,771 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-24 05:03:52,780 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-24 05:03:52,805 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:03:52,805 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:03:52,805 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:03:52,806 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:03:52,806 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:03:52,806 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:03:52,806 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:03:52,806 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:03:52,824 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2019-11-24 05:03:52,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:03:52,830 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:03:52,831 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:03:52,832 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:03:52,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:03:52,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1221477738, now seen corresponding path program 1 times [2019-11-24 05:03:52,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:03:52,849 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764072964] [2019-11-24 05:03:52,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:03:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:03:53,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:03:53,235 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764072964] [2019-11-24 05:03:53,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:03:53,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:03:53,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685293766] [2019-11-24 05:03:53,240 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:03:53,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:03:53,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:03:53,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:03:53,253 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 2 states. [2019-11-24 05:03:53,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:03:53,276 INFO L93 Difference]: Finished difference Result 100 states and 153 transitions. [2019-11-24 05:03:53,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:03:53,278 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 05:03:53,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:03:53,290 INFO L225 Difference]: With dead ends: 100 [2019-11-24 05:03:53,290 INFO L226 Difference]: Without dead ends: 59 [2019-11-24 05:03:53,294 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:03:53,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-24 05:03:53,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2019-11-24 05:03:53,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-24 05:03:53,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 86 transitions. [2019-11-24 05:03:53,339 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 86 transitions. Word has length 8 [2019-11-24 05:03:53,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:03:53,339 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 86 transitions. [2019-11-24 05:03:53,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:03:53,340 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 86 transitions. [2019-11-24 05:03:53,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 05:03:53,341 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:03:53,341 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:03:53,341 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:03:53,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:03:53,342 INFO L82 PathProgramCache]: Analyzing trace with hash -307081901, now seen corresponding path program 1 times [2019-11-24 05:03:53,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:03:53,342 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158766778] [2019-11-24 05:03:53,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:03:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:03:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:03:53,443 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158766778] [2019-11-24 05:03:53,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:03:53,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:03:53,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841102877] [2019-11-24 05:03:53,446 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:03:53,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:03:53,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:03:53,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:03:53,447 INFO L87 Difference]: Start difference. First operand 59 states and 86 transitions. Second operand 3 states. [2019-11-24 05:03:53,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:03:53,468 INFO L93 Difference]: Finished difference Result 94 states and 126 transitions. [2019-11-24 05:03:53,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:03:53,469 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-24 05:03:53,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:03:53,470 INFO L225 Difference]: With dead ends: 94 [2019-11-24 05:03:53,470 INFO L226 Difference]: Without dead ends: 61 [2019-11-24 05:03:53,472 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:03:53,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-24 05:03:53,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-11-24 05:03:53,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-24 05:03:53,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 88 transitions. [2019-11-24 05:03:53,481 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 88 transitions. Word has length 9 [2019-11-24 05:03:53,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:03:53,482 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 88 transitions. [2019-11-24 05:03:53,482 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:03:53,482 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 88 transitions. [2019-11-24 05:03:53,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 05:03:53,483 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:03:53,483 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:03:53,484 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:03:53,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:03:53,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1949703979, now seen corresponding path program 1 times [2019-11-24 05:03:53,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:03:53,485 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774571423] [2019-11-24 05:03:53,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:03:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:03:53,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 05:03:53,695 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774571423] [2019-11-24 05:03:53,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:03:53,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:03:53,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584736211] [2019-11-24 05:03:53,699 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:03:53,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:03:53,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:03:53,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:03:53,700 INFO L87 Difference]: Start difference. First operand 61 states and 88 transitions. Second operand 5 states. [2019-11-24 05:03:53,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:03:53,891 INFO L93 Difference]: Finished difference Result 136 states and 190 transitions. [2019-11-24 05:03:53,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 05:03:53,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-24 05:03:53,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:03:53,893 INFO L225 Difference]: With dead ends: 136 [2019-11-24 05:03:53,894 INFO L226 Difference]: Without dead ends: 110 [2019-11-24 05:03:53,894 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:03:53,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-11-24 05:03:53,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 87. [2019-11-24 05:03:53,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-11-24 05:03:53,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 137 transitions. [2019-11-24 05:03:53,907 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 137 transitions. Word has length 13 [2019-11-24 05:03:53,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:03:53,907 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 137 transitions. [2019-11-24 05:03:53,908 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:03:53,908 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 137 transitions. [2019-11-24 05:03:53,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 05:03:53,908 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:03:53,910 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:03:53,910 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:03:53,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:03:53,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1943392486, now seen corresponding path program 1 times [2019-11-24 05:03:53,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:03:53,911 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117682702] [2019-11-24 05:03:53,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:03:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:03:54,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 05:03:54,110 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117682702] [2019-11-24 05:03:54,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:03:54,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-24 05:03:54,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676974793] [2019-11-24 05:03:54,111 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 05:03:54,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:03:54,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 05:03:54,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:03:54,112 INFO L87 Difference]: Start difference. First operand 87 states and 137 transitions. Second operand 6 states. [2019-11-24 05:03:54,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:03:54,825 INFO L93 Difference]: Finished difference Result 176 states and 277 transitions. [2019-11-24 05:03:54,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-24 05:03:54,826 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-11-24 05:03:54,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:03:54,827 INFO L225 Difference]: With dead ends: 176 [2019-11-24 05:03:54,830 INFO L226 Difference]: Without dead ends: 170 [2019-11-24 05:03:54,831 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2019-11-24 05:03:54,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2019-11-24 05:03:54,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 146. [2019-11-24 05:03:54,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-11-24 05:03:54,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 246 transitions. [2019-11-24 05:03:54,865 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 246 transitions. Word has length 13 [2019-11-24 05:03:54,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:03:54,865 INFO L462 AbstractCegarLoop]: Abstraction has 146 states and 246 transitions. [2019-11-24 05:03:54,865 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 05:03:54,865 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 246 transitions. [2019-11-24 05:03:54,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-24 05:03:54,870 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:03:54,870 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:03:54,870 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:03:54,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:03:54,871 INFO L82 PathProgramCache]: Analyzing trace with hash -979235410, now seen corresponding path program 1 times [2019-11-24 05:03:54,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:03:54,871 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652425271] [2019-11-24 05:03:54,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:03:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:03:54,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:03:54,952 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652425271] [2019-11-24 05:03:54,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:03:54,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:03:54,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164889476] [2019-11-24 05:03:54,953 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:03:54,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:03:54,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:03:54,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:03:54,954 INFO L87 Difference]: Start difference. First operand 146 states and 246 transitions. Second operand 3 states. [2019-11-24 05:03:54,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:03:54,984 INFO L93 Difference]: Finished difference Result 426 states and 722 transitions. [2019-11-24 05:03:54,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:03:54,985 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-11-24 05:03:54,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:03:54,988 INFO L225 Difference]: With dead ends: 426 [2019-11-24 05:03:54,988 INFO L226 Difference]: Without dead ends: 284 [2019-11-24 05:03:54,992 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:03:54,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2019-11-24 05:03:55,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 238. [2019-11-24 05:03:55,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2019-11-24 05:03:55,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 422 transitions. [2019-11-24 05:03:55,033 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 422 transitions. Word has length 15 [2019-11-24 05:03:55,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:03:55,033 INFO L462 AbstractCegarLoop]: Abstraction has 238 states and 422 transitions. [2019-11-24 05:03:55,034 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:03:55,034 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 422 transitions. [2019-11-24 05:03:55,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-24 05:03:55,035 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:03:55,035 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:03:55,035 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:03:55,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:03:55,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1157117721, now seen corresponding path program 1 times [2019-11-24 05:03:55,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:03:55,036 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196139667] [2019-11-24 05:03:55,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:03:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:03:55,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:03:55,095 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196139667] [2019-11-24 05:03:55,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:03:55,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:03:55,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624712870] [2019-11-24 05:03:55,096 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:03:55,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:03:55,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:03:55,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:03:55,097 INFO L87 Difference]: Start difference. First operand 238 states and 422 transitions. Second operand 3 states. [2019-11-24 05:03:55,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:03:55,127 INFO L93 Difference]: Finished difference Result 698 states and 1242 transitions. [2019-11-24 05:03:55,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:03:55,128 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-24 05:03:55,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:03:55,130 INFO L225 Difference]: With dead ends: 698 [2019-11-24 05:03:55,131 INFO L226 Difference]: Without dead ends: 464 [2019-11-24 05:03:55,132 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:03:55,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2019-11-24 05:03:55,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 418. [2019-11-24 05:03:55,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2019-11-24 05:03:55,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 762 transitions. [2019-11-24 05:03:55,156 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 762 transitions. Word has length 16 [2019-11-24 05:03:55,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:03:55,156 INFO L462 AbstractCegarLoop]: Abstraction has 418 states and 762 transitions. [2019-11-24 05:03:55,156 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:03:55,156 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 762 transitions. [2019-11-24 05:03:55,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-24 05:03:55,158 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:03:55,158 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:03:55,158 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:03:55,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:03:55,159 INFO L82 PathProgramCache]: Analyzing trace with hash 467024064, now seen corresponding path program 1 times [2019-11-24 05:03:55,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:03:55,159 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683467787] [2019-11-24 05:03:55,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:03:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:03:55,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:03:55,292 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683467787] [2019-11-24 05:03:55,293 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294285763] [2019-11-24 05:03:55,293 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 [2019-11-24 05:03:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:03:55,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 05:03:55,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:03:55,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:03:55,701 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:03:55,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:03:55,736 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1714915999] [2019-11-24 05:03:55,786 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-11-24 05:03:55,787 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:03:55,793 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:03:55,800 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:03:55,802 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:04:48,479 WARN L192 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 699 [2019-11-24 05:04:52,165 WARN L192 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 306 DAG size of output: 249 [2019-11-24 05:04:52,622 WARN L192 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 738 [2019-11-24 05:04:55,495 WARN L192 SmtUtils]: Spent 2.41 s on a formula simplification that was a NOOP. DAG size: 1361