/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_spec1_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:19:39,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:19:39,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:19:39,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:19:39,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:19:39,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:19:39,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:19:39,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:19:39,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:19:39,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:19:39,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:19:39,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:19:39,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:19:39,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:19:39,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:19:39,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:19:39,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:19:39,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:19:39,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:19:39,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:19:39,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:19:39,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:19:39,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:19:39,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:19:39,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:19:39,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:19:39,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:19:39,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:19:39,225 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 05:19:39,257 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:19:39,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:19:39,258 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:19:39,258 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:19:39,258 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:19:39,259 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:19:39,259 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:19:39,259 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:19:39,259 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:19:39,259 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:19:39,259 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:19:39,261 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:19:39,261 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:19:39,261 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:19:39,261 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:19:39,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:19:39,262 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:19:39,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:19:39,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:19:39,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:19:39,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:19:39,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:19:39,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:19:39,264 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:19:39,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:19:39,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:19:39,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:19:39,265 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:19:39,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:19:39,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:19:39,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:19:39,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:19:39,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:19:39,266 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:19:39,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:19:39,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:19:39,268 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:19:39,269 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:19:39,539 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:19:39,550 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:19:39,557 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:19:39,561 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:19:39,561 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:19:39,562 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product61.cil.c [2019-11-24 05:19:39,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59de780d3/1e08809f99d34fb987426ecdeb25fae4/FLAG39290028e [2019-11-24 05:19:40,157 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:19:40,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product61.cil.c [2019-11-24 05:19:40,174 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59de780d3/1e08809f99d34fb987426ecdeb25fae4/FLAG39290028e [2019-11-24 05:19:40,473 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59de780d3/1e08809f99d34fb987426ecdeb25fae4 [2019-11-24 05:19:40,481 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:19:40,482 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:19:40,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:19:40,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:19:40,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:19:40,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:19:40" (1/1) ... [2019-11-24 05:19:40,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@790ce9f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:40, skipping insertion in model container [2019-11-24 05:19:40,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:19:40" (1/1) ... [2019-11-24 05:19:40,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:19:40,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:19:40,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:19:40,981 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:19:41,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:19:41,111 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:19:41,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:41 WrapperNode [2019-11-24 05:19:41,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:19:41,113 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:19:41,113 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:19:41,113 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:19:41,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:41" (1/1) ... [2019-11-24 05:19:41,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:41" (1/1) ... [2019-11-24 05:19:41,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:19:41,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:19:41,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:19:41,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:19:41,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:41" (1/1) ... [2019-11-24 05:19:41,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:41" (1/1) ... [2019-11-24 05:19:41,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:41" (1/1) ... [2019-11-24 05:19:41,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:41" (1/1) ... [2019-11-24 05:19:41,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:41" (1/1) ... [2019-11-24 05:19:41,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:41" (1/1) ... [2019-11-24 05:19:41,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:41" (1/1) ... [2019-11-24 05:19:41,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:19:41,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:19:41,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:19:41,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:19:41,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:41" (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 05:19:41,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:19:41,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:19:41,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:19:41,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:19:45,060 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:19:45,060 INFO L284 CfgBuilder]: Removed 348 assume(true) statements. [2019-11-24 05:19:45,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:19:45 BoogieIcfgContainer [2019-11-24 05:19:45,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:19:45,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:19:45,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:19:45,068 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:19:45,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:19:40" (1/3) ... [2019-11-24 05:19:45,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d29b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:19:45, skipping insertion in model container [2019-11-24 05:19:45,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:41" (2/3) ... [2019-11-24 05:19:45,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d29b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:19:45, skipping insertion in model container [2019-11-24 05:19:45,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:19:45" (3/3) ... [2019-11-24 05:19:45,075 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product61.cil.c [2019-11-24 05:19:45,084 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:19:45,089 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:19:45,097 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:19:45,120 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:19:45,121 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:19:45,121 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:19:45,121 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:19:45,121 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:19:45,121 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:19:45,122 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:19:45,122 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:19:45,136 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-24 05:19:45,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 05:19:45,142 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:19:45,143 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:19:45,143 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:19:45,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:19:45,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1218609527, now seen corresponding path program 1 times [2019-11-24 05:19:45,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:19:45,155 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645306390] [2019-11-24 05:19:45,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:19:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:19:45,785 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 05:19:45,786 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645306390] [2019-11-24 05:19:45,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:19:45,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:19:45,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818727885] [2019-11-24 05:19:45,794 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:19:45,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:19:45,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:19:45,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:19:45,812 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2019-11-24 05:19:46,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:19:46,033 INFO L93 Difference]: Finished difference Result 70 states and 100 transitions. [2019-11-24 05:19:46,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 05:19:46,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-24 05:19:46,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:19:46,045 INFO L225 Difference]: With dead ends: 70 [2019-11-24 05:19:46,045 INFO L226 Difference]: Without dead ends: 41 [2019-11-24 05:19:46,049 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:19:46,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-24 05:19:46,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 28. [2019-11-24 05:19:46,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-24 05:19:46,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2019-11-24 05:19:46,091 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 7 [2019-11-24 05:19:46,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:19:46,092 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-11-24 05:19:46,092 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:19:46,092 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2019-11-24 05:19:46,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-24 05:19:46,093 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:19:46,093 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-11-24 05:19:46,093 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:19:46,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:19:46,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1323938666, now seen corresponding path program 1 times [2019-11-24 05:19:46,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:19:46,094 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572910880] [2019-11-24 05:19:46,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:19:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:19:46,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:19:46,478 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572910880] [2019-11-24 05:19:46,479 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791659126] [2019-11-24 05:19:46,479 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 05:19:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:19:46,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-24 05:19:46,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:19:46,781 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:46,788 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:46,792 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:46,800 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:46,804 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:46,819 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:46,875 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:46,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:19:46,891 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:19:46,942 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:46,947 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:46,954 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:46,957 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:47,001 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:47,010 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:47,013 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:47,014 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:47,016 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:47,019 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:47,020 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:47,021 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:47,022 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:47,022 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:47,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 05:19:47,063 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [891266834] [2019-11-24 05:19:47,088 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-11-24 05:19:47,089 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:19:47,095 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:19:47,102 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:19:47,103 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:19:56,326 WARN L192 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 476 [2019-11-24 05:19:58,172 WARN L192 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:19:58,343 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 484 [2019-11-24 05:19:58,898 WARN L192 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 593 DAG size of output: 593 [2019-11-24 05:20:00,269 WARN L192 SmtUtils]: Spent 977.00 ms on a formula simplification that was a NOOP. DAG size: 694 [2019-11-24 05:20:03,486 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 05:20:09,107 WARN L192 SmtUtils]: Spent 5.25 s on a formula simplification. DAG size of input: 484 DAG size of output: 429 [2019-11-24 05:20:31,566 WARN L192 SmtUtils]: Spent 22.14 s on a formula simplification. DAG size of input: 694 DAG size of output: 503