/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/minepump_spec2_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:20:58,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:20:58,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:20:58,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:20:58,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:20:58,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:20:58,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:20:58,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:20:58,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:20:58,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:20:58,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:20:58,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:20:58,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:20:58,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:20:58,087 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:20:58,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:20:58,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:20:58,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:20:58,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:20:58,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:20:58,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:20:58,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:20:58,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:20:58,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:20:58,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:20:58,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:20:58,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:20:58,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:20:58,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:20:58,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:20:58,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:20:58,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:20:58,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:20:58,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:20:58,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:20:58,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:20:58,116 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 05:20:58,131 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:20:58,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:20:58,132 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:20:58,132 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:20:58,132 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:20:58,132 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:20:58,133 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:20:58,133 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:20:58,133 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:20:58,133 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:20:58,133 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:20:58,133 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:20:58,134 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:20:58,134 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:20:58,134 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:20:58,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:20:58,135 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:20:58,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:20:58,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:20:58,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:20:58,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:20:58,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:20:58,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:20:58,136 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:20:58,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:20:58,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:20:58,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:20:58,137 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:20:58,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:20:58,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:20:58,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:20:58,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:20:58,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:20:58,138 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:20:58,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:20:58,139 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:20:58,139 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:20:58,139 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:20:58,402 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:20:58,415 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:20:58,418 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:20:58,420 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:20:58,420 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:20:58,421 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product39.cil.c [2019-11-24 05:20:58,492 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ffb0b592/2c9fc5d76afa4ad69b64e27135b125b8/FLAG5204067c1 [2019-11-24 05:20:58,936 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:20:58,936 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product39.cil.c [2019-11-24 05:20:58,949 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ffb0b592/2c9fc5d76afa4ad69b64e27135b125b8/FLAG5204067c1 [2019-11-24 05:20:59,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ffb0b592/2c9fc5d76afa4ad69b64e27135b125b8 [2019-11-24 05:20:59,314 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:20:59,315 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:20:59,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:20:59,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:20:59,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:20:59,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:20:59" (1/1) ... [2019-11-24 05:20:59,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57150996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:20:59, skipping insertion in model container [2019-11-24 05:20:59,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:20:59" (1/1) ... [2019-11-24 05:20:59,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:20:59,399 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:20:59,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:20:59,850 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:20:59,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:21:00,017 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:21:00,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:00 WrapperNode [2019-11-24 05:21:00,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:21:00,019 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:21:00,019 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:21:00,019 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:21:00,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:00" (1/1) ... [2019-11-24 05:21:00,062 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:00" (1/1) ... [2019-11-24 05:21:00,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:21:00,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:21:00,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:21:00,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:21:00,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:00" (1/1) ... [2019-11-24 05:21:00,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:00" (1/1) ... [2019-11-24 05:21:00,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:00" (1/1) ... [2019-11-24 05:21:00,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:00" (1/1) ... [2019-11-24 05:21:00,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:00" (1/1) ... [2019-11-24 05:21:00,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:00" (1/1) ... [2019-11-24 05:21:00,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:00" (1/1) ... [2019-11-24 05:21:00,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:21:00,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:21:00,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:21:00,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:21:00,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:00" (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 05:21:00,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:21:00,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:21:00,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:21:00,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:21:02,374 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:21:02,374 INFO L284 CfgBuilder]: Removed 162 assume(true) statements. [2019-11-24 05:21:02,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:21:02 BoogieIcfgContainer [2019-11-24 05:21:02,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:21:02,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:21:02,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:21:02,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:21:02,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:20:59" (1/3) ... [2019-11-24 05:21:02,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d57368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:21:02, skipping insertion in model container [2019-11-24 05:21:02,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:00" (2/3) ... [2019-11-24 05:21:02,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d57368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:21:02, skipping insertion in model container [2019-11-24 05:21:02,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:21:02" (3/3) ... [2019-11-24 05:21:02,383 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product39.cil.c [2019-11-24 05:21:02,393 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:21:02,400 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:21:02,411 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:21:02,435 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:21:02,435 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:21:02,436 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:21:02,436 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:21:02,436 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:21:02,436 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:21:02,436 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:21:02,437 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:21:02,452 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:21:02,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:21:02,458 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:21:02,459 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:21:02,459 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:21:02,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:21:02,465 INFO L82 PathProgramCache]: Analyzing trace with hash -466759028, now seen corresponding path program 1 times [2019-11-24 05:21:02,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:21:02,475 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673311040] [2019-11-24 05:21:02,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:21:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:21:02,819 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 05:21:02,819 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673311040] [2019-11-24 05:21:02,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:21:02,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:21:02,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030966856] [2019-11-24 05:21:02,825 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:21:02,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:21:02,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:21:02,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:21:02,839 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2019-11-24 05:21:02,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:21:02,927 INFO L93 Difference]: Finished difference Result 68 states and 105 transitions. [2019-11-24 05:21:02,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:21:02,929 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-24 05:21:02,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:21:02,945 INFO L225 Difference]: With dead ends: 68 [2019-11-24 05:21:02,945 INFO L226 Difference]: Without dead ends: 40 [2019-11-24 05:21:02,951 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 05:21:02,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-24 05:21:02,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-11-24 05:21:02,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-24 05:21:03,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 54 transitions. [2019-11-24 05:21:03,003 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 54 transitions. Word has length 8 [2019-11-24 05:21:03,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:21:03,004 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 54 transitions. [2019-11-24 05:21:03,004 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:21:03,005 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2019-11-24 05:21:03,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 05:21:03,007 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:21:03,007 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-24 05:21:03,007 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:21:03,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:21:03,008 INFO L82 PathProgramCache]: Analyzing trace with hash 846356540, now seen corresponding path program 1 times [2019-11-24 05:21:03,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:21:03,008 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2277281] [2019-11-24 05:21:03,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:21:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:21:03,366 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:21:03,367 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2277281] [2019-11-24 05:21:03,367 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400692318] [2019-11-24 05:21:03,367 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 05:21:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:21:03,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 45 conjunts are in the unsatisfiable core [2019-11-24 05:21:03,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:21:03,570 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:03,572 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:03,574 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:03,576 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:03,577 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:03,581 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:03,985 WARN L192 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2019-11-24 05:21:04,196 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-11-24 05:21:04,322 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 29 [2019-11-24 05:21:04,395 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:04,399 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:04,467 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:04,486 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:21:04,486 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:21:04,573 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:04,576 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:04,578 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:04,580 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:04,581 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:04,588 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:04,589 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:04,590 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:04,591 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:04,594 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:04,594 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:04,595 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:04,598 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:04,603 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:04,610 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:04,613 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:04,614 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:04,636 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:04,637 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:04,638 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:04,837 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:04,838 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:04,840 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:04,841 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:04,842 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:04,861 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:21:04,861 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1103889903] [2019-11-24 05:21:04,885 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:21:04,885 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:21:04,891 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:21:04,897 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:21:04,897 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:21:14,859 WARN L192 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 478 [2019-11-24 05:21:16,586 WARN L192 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:21:16,749 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 486 [2019-11-24 05:21:20,121 WARN L192 SmtUtils]: Spent 2.77 s on a formula simplification. DAG size of input: 1024 DAG size of output: 857 [2019-11-24 05:21:25,703 WARN L192 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 947 DAG size of output: 944 [2019-11-24 05:21:27,182 WARN L192 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 711 [2019-11-24 05:21:27,492 WARN L192 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 711 [2019-11-24 05:21:27,845 WARN L192 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 711 [2019-11-24 05:21:28,138 WARN L192 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 711 [2019-11-24 05:21:28,485 WARN L192 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 711 [2019-11-24 05:21:28,769 WARN L192 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 711 [2019-11-24 05:21:28,777 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 05:21:33,958 WARN L192 SmtUtils]: Spent 4.98 s on a formula simplification. DAG size of input: 486 DAG size of output: 431 [2019-11-24 05:21:58,017 WARN L192 SmtUtils]: Spent 23.59 s on a formula simplification. DAG size of input: 711 DAG size of output: 540 [2019-11-24 05:22:25,666 WARN L192 SmtUtils]: Spent 26.89 s on a formula simplification. DAG size of input: 936 DAG size of output: 586