/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_spec7_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:09:46,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:09:46,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:09:46,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:09:46,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:09:46,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:09:46,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:09:46,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:09:46,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:09:46,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:09:46,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:09:46,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:09:46,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:09:46,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:09:46,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:09:46,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:09:46,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:09:46,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:09:46,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:09:46,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:09:46,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:09:46,594 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:09:46,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:09:46,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:09:46,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-24 05:09:46,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-24 05:09:46,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-24 05:09:46,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-24 05:09:46,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-24 05:09:46,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-24 05:09:46,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:09:46,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:09:46,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:09:46,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:09:46,615 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:09:46,615 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:09:46,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:09:46,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:09:46,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:09:46,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:09:46,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:09:46,620 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 05:09:46,641 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:09:46,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:09:46,642 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:09:46,642 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:09:46,642 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:09:46,643 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:09:46,643 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:09:46,643 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:09:46,643 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:09:46,643 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:09:46,645 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:09:46,645 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:09:46,645 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:09:46,645 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:09:46,646 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:09:46,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:09:46,647 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:09:46,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:09:46,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:09:46,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:09:46,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:09:46,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:09:46,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:09:46,648 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:09:46,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:09:46,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:09:46,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:09:46,649 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:09:46,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:09:46,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:09:46,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:09:46,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:09:46,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:09:46,651 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:09:46,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:09:46,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:09:46,652 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:09:46,652 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:09:46,922 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:09:46,938 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:09:46,943 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:09:46,945 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:09:46,946 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:09:46,947 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec7_product32.cil.c [2019-11-24 05:09:47,032 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c94ab3c5a/b7e75d2b35da4e8e92149db8f0c03d3e/FLAG19b025511 [2019-11-24 05:09:47,686 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:09:47,686 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product32.cil.c [2019-11-24 05:09:47,705 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c94ab3c5a/b7e75d2b35da4e8e92149db8f0c03d3e/FLAG19b025511 [2019-11-24 05:09:47,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c94ab3c5a/b7e75d2b35da4e8e92149db8f0c03d3e [2019-11-24 05:09:47,897 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:09:47,898 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:09:47,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:09:47,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:09:47,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:09:47,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:09:47" (1/1) ... [2019-11-24 05:09:47,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a840e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:47, skipping insertion in model container [2019-11-24 05:09:47,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:09:47" (1/1) ... [2019-11-24 05:09:47,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:09:47,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:09:48,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:09:48,862 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:09:48,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:09:49,092 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:09:49,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:49 WrapperNode [2019-11-24 05:09:49,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:09:49,094 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:09:49,094 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:09:49,094 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:09:49,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:49" (1/1) ... [2019-11-24 05:09:49,143 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:49" (1/1) ... [2019-11-24 05:09:49,331 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:09:49,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:09:49,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:09:49,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:09:49,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:49" (1/1) ... [2019-11-24 05:09:49,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:49" (1/1) ... [2019-11-24 05:09:49,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:49" (1/1) ... [2019-11-24 05:09:49,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:49" (1/1) ... [2019-11-24 05:09:49,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:49" (1/1) ... [2019-11-24 05:09:49,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:49" (1/1) ... [2019-11-24 05:09:49,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:49" (1/1) ... [2019-11-24 05:09:49,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:09:49,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:09:49,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:09:49,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:09:49,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:49" (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 05:09:49,635 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 05:09:49,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:09:49,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:09:49,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:09:49,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:10:05,786 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:10:05,787 INFO L284 CfgBuilder]: Removed 693 assume(true) statements. [2019-11-24 05:10:05,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:10:05 BoogieIcfgContainer [2019-11-24 05:10:05,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:10:05,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:10:05,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:10:05,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:10:05,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:09:47" (1/3) ... [2019-11-24 05:10:05,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f48020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:10:05, skipping insertion in model container [2019-11-24 05:10:05,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:09:49" (2/3) ... [2019-11-24 05:10:05,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f48020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:10:05, skipping insertion in model container [2019-11-24 05:10:05,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:10:05" (3/3) ... [2019-11-24 05:10:05,801 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec7_product32.cil.c [2019-11-24 05:10:05,811 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:10:05,820 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-24 05:10:05,833 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-24 05:10:05,864 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:10:05,864 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:10:05,865 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:10:05,865 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:10:05,865 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:10:05,865 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:10:05,865 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:10:05,865 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:10:05,888 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2019-11-24 05:10:05,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 05:10:05,896 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:10:05,898 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:10:05,898 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 05:10:05,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:10:05,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1672979509, now seen corresponding path program 1 times [2019-11-24 05:10:05,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:10:05,917 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307421269] [2019-11-24 05:10:05,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:10:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:10:06,350 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 05:10:06,351 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307421269] [2019-11-24 05:10:06,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:10:06,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:10:06,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226947796] [2019-11-24 05:10:06,360 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:10:06,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:10:06,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:10:06,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:10:06,384 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 2 states. [2019-11-24 05:10:06,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:10:06,423 INFO L93 Difference]: Finished difference Result 88 states and 129 transitions. [2019-11-24 05:10:06,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:10:06,425 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-24 05:10:06,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:10:06,445 INFO L225 Difference]: With dead ends: 88 [2019-11-24 05:10:06,445 INFO L226 Difference]: Without dead ends: 53 [2019-11-24 05:10:06,450 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 05:10:06,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-24 05:10:06,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2019-11-24 05:10:06,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-24 05:10:06,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 76 transitions. [2019-11-24 05:10:06,514 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 76 transitions. Word has length 7 [2019-11-24 05:10:06,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:10:06,514 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 76 transitions. [2019-11-24 05:10:06,515 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:10:06,515 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 76 transitions. [2019-11-24 05:10:06,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:10:06,516 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:10:06,516 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:10:06,516 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 05:10:06,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:10:06,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1560207149, now seen corresponding path program 1 times [2019-11-24 05:10:06,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:10:06,517 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368114915] [2019-11-24 05:10:06,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:10:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:10:06,726 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 05:10:06,727 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368114915] [2019-11-24 05:10:06,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:10:06,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:10:06,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313168917] [2019-11-24 05:10:06,729 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:10:06,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:10:06,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:10:06,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:10:06,731 INFO L87 Difference]: Start difference. First operand 53 states and 76 transitions. Second operand 3 states. [2019-11-24 05:10:06,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:10:06,755 INFO L93 Difference]: Finished difference Result 82 states and 106 transitions. [2019-11-24 05:10:06,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:10:06,756 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-24 05:10:06,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:10:06,757 INFO L225 Difference]: With dead ends: 82 [2019-11-24 05:10:06,757 INFO L226 Difference]: Without dead ends: 55 [2019-11-24 05:10:06,759 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 05:10:06,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-24 05:10:06,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2019-11-24 05:10:06,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-24 05:10:06,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 78 transitions. [2019-11-24 05:10:06,777 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 78 transitions. Word has length 8 [2019-11-24 05:10:06,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:10:06,778 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 78 transitions. [2019-11-24 05:10:06,778 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:10:06,778 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 78 transitions. [2019-11-24 05:10:06,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-24 05:10:06,783 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:10:06,783 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:10:06,783 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 05:10:06,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:10:06,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1816189322, now seen corresponding path program 1 times [2019-11-24 05:10:06,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:10:06,785 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027199967] [2019-11-24 05:10:06,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:10:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:10:07,265 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 05:10:07,266 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027199967] [2019-11-24 05:10:07,266 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421961656] [2019-11-24 05:10:07,266 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 05:10:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:10:07,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 05:10:07,746 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:10:07,791 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 05:10:07,791 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:10:07,824 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 05:10:07,825 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2058532135] [2019-11-24 05:10:07,851 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-11-24 05:10:07,851 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:10:07,862 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:10:07,870 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:10:07,874 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:11:05,422 WARN L192 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 699 [2019-11-24 05:11:09,663 WARN L192 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 309 DAG size of output: 251 [2019-11-24 05:11:10,096 WARN L192 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 740 [2019-11-24 05:11:10,566 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8