/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_spec3_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:59:31,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:59:31,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:59:31,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:59:31,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:59:31,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:59:31,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:59:31,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:59:31,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:59:31,269 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:59:31,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:59:31,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:59:31,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:59:31,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:59:31,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:59:31,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:59:31,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:59:31,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:59:31,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:59:31,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:59:31,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:59:31,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:59:31,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:59:31,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:59:31,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:59:31,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:59:31,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:59:31,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:59:31,300 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 04:59:31,315 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:59:31,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:59:31,316 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:59:31,316 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:59:31,316 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:59:31,316 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:59:31,317 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:59:31,317 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:59:31,317 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:59:31,317 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:59:31,317 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:59:31,317 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:59:31,318 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:59:31,318 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:59:31,318 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:59:31,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:59:31,319 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:59:31,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:59:31,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:59:31,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:59:31,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:59:31,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:59:31,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:59:31,320 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:59:31,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:59:31,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:59:31,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:59:31,321 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:59:31,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:59:31,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:59:31,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:59:31,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:59:31,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:59:31,322 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:59:31,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:59:31,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:59:31,323 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:59:31,323 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:59:31,622 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:59:31,637 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:59:31,641 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:59:31,642 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:59:31,643 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:59:31,643 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product18.cil.c [2019-11-24 04:59:31,719 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67bff6b37/32f8e4cbf31142b981ec57568daf02e7/FLAG792fceafb [2019-11-24 04:59:32,317 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:59:32,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product18.cil.c [2019-11-24 04:59:32,346 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67bff6b37/32f8e4cbf31142b981ec57568daf02e7/FLAG792fceafb [2019-11-24 04:59:32,565 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67bff6b37/32f8e4cbf31142b981ec57568daf02e7 [2019-11-24 04:59:32,574 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:59:32,576 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:59:32,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:59:32,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:59:32,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:59:32,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:59:32" (1/1) ... [2019-11-24 04:59:32,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c53a0de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:32, skipping insertion in model container [2019-11-24 04:59:32,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:59:32" (1/1) ... [2019-11-24 04:59:32,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:59:32,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:59:33,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:59:33,474 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:59:33,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:59:33,666 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:59:33,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:33 WrapperNode [2019-11-24 04:59:33,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:59:33,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:59:33,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:59:33,668 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:59:33,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:33" (1/1) ... [2019-11-24 04:59:33,707 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:33" (1/1) ... [2019-11-24 04:59:33,823 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:59:33,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:59:33,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:59:33,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:59:33,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:33" (1/1) ... [2019-11-24 04:59:33,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:33" (1/1) ... [2019-11-24 04:59:33,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:33" (1/1) ... [2019-11-24 04:59:33,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:33" (1/1) ... [2019-11-24 04:59:33,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:33" (1/1) ... [2019-11-24 04:59:33,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:33" (1/1) ... [2019-11-24 04:59:33,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:33" (1/1) ... [2019-11-24 04:59:33,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:59:33,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:59:33,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:59:33,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:59:33,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:33" (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 04:59:34,074 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 04:59:34,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:59:34,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 04:59:34,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:59:34,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:59:40,715 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:59:40,715 INFO L284 CfgBuilder]: Removed 283 assume(true) statements. [2019-11-24 04:59:40,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:59:40 BoogieIcfgContainer [2019-11-24 04:59:40,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:59:40,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:59:40,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:59:40,721 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:59:40,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:59:32" (1/3) ... [2019-11-24 04:59:40,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2972585c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:59:40, skipping insertion in model container [2019-11-24 04:59:40,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:59:33" (2/3) ... [2019-11-24 04:59:40,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2972585c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:59:40, skipping insertion in model container [2019-11-24 04:59:40,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:59:40" (3/3) ... [2019-11-24 04:59:40,725 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec3_product18.cil.c [2019-11-24 04:59:40,735 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:59:40,743 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-24 04:59:40,755 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-24 04:59:40,779 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:59:40,779 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:59:40,779 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:59:40,779 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:59:40,779 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:59:40,779 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:59:40,780 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:59:40,780 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:59:40,795 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-11-24 04:59:40,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 04:59:40,801 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:59:40,802 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:59:40,802 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:59:40,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:59:40,808 INFO L82 PathProgramCache]: Analyzing trace with hash -195278002, now seen corresponding path program 1 times [2019-11-24 04:59:40,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:59:40,816 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168934275] [2019-11-24 04:59:40,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:59:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:59:41,155 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 04:59:41,156 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168934275] [2019-11-24 04:59:41,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:59:41,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:59:41,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943540322] [2019-11-24 04:59:41,164 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 04:59:41,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:59:41,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 04:59:41,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:59:41,181 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 2 states. [2019-11-24 04:59:41,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:59:41,206 INFO L93 Difference]: Finished difference Result 66 states and 103 transitions. [2019-11-24 04:59:41,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 04:59:41,208 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-24 04:59:41,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:59:41,219 INFO L225 Difference]: With dead ends: 66 [2019-11-24 04:59:41,220 INFO L226 Difference]: Without dead ends: 43 [2019-11-24 04:59:41,223 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 04:59:41,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-24 04:59:41,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-11-24 04:59:41,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-24 04:59:41,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 66 transitions. [2019-11-24 04:59:41,261 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 66 transitions. Word has length 7 [2019-11-24 04:59:41,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:59:41,261 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 66 transitions. [2019-11-24 04:59:41,262 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 04:59:41,262 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 66 transitions. [2019-11-24 04:59:41,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 04:59:41,262 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:59:41,263 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:59:41,263 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:59:41,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:59:41,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1522858678, now seen corresponding path program 1 times [2019-11-24 04:59:41,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:59:41,264 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506491719] [2019-11-24 04:59:41,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:59:41,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:59:41,417 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 04:59:41,418 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506491719] [2019-11-24 04:59:41,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:59:41,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:59:41,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992005003] [2019-11-24 04:59:41,420 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:59:41,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:59:41,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:59:41,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:59:41,423 INFO L87 Difference]: Start difference. First operand 43 states and 66 transitions. Second operand 3 states. [2019-11-24 04:59:41,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:59:41,446 INFO L93 Difference]: Finished difference Result 62 states and 86 transitions. [2019-11-24 04:59:41,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:59:41,447 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-24 04:59:41,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:59:41,448 INFO L225 Difference]: With dead ends: 62 [2019-11-24 04:59:41,449 INFO L226 Difference]: Without dead ends: 45 [2019-11-24 04:59:41,451 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 04:59:41,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-24 04:59:41,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2019-11-24 04:59:41,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-24 04:59:41,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 68 transitions. [2019-11-24 04:59:41,469 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 68 transitions. Word has length 8 [2019-11-24 04:59:41,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:59:41,470 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 68 transitions. [2019-11-24 04:59:41,470 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:59:41,470 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 68 transitions. [2019-11-24 04:59:41,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-24 04:59:41,472 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:59:41,472 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:59:41,473 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:59:41,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:59:41,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1869715455, now seen corresponding path program 1 times [2019-11-24 04:59:41,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:59:41,475 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205158346] [2019-11-24 04:59:41,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:59:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:59:41,756 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 04:59:41,757 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205158346] [2019-11-24 04:59:41,757 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234385159] [2019-11-24 04:59:41,757 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 04:59:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:59:42,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 04:59:42,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:59:42,151 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 04:59:42,152 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:59:42,178 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 04:59:42,180 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1714297697] [2019-11-24 04:59:42,229 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-11-24 04:59:42,229 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:59:42,234 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:59:42,241 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:59:42,242 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:00:31,749 WARN L192 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 702 [2019-11-24 05:00:35,772 WARN L192 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 301 DAG size of output: 245 [2019-11-24 05:00:36,253 WARN L192 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 739 [2019-11-24 05:00:36,545 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8