/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_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:22:51,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:22:51,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:22:51,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:22:51,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:22:51,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:22:51,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:22:51,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:22:51,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:22:51,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:22:51,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:22:51,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:22:51,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:22:51,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:22:51,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:22:51,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:22:51,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:22:51,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:22:51,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:22:51,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:22:51,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:22:51,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:22:51,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:22:51,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:22:51,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:22:51,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:22:51,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:22:51,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:22:51,458 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 05:22:51,472 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:22:51,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:22:51,473 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:22:51,473 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:22:51,474 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:22:51,474 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:22:51,474 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:22:51,474 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:22:51,474 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:22:51,474 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:22:51,475 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:22:51,475 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:22:51,475 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:22:51,475 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:22:51,475 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:22:51,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:22:51,476 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:22:51,477 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:22:51,477 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:22:51,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:22:51,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:22:51,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:22:51,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:22:51,478 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:22:51,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:22:51,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:22:51,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:22:51,479 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:22:51,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:22:51,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:22:51,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:22:51,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:22:51,480 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:22:51,480 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:22:51,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:22:51,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:22:51,480 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:22:51,481 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:22:51,784 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:22:51,803 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:22:51,808 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:22:51,809 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:22:51,810 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:22:51,810 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product55.cil.c [2019-11-24 05:22:51,884 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ebd55703/686fba9ff5e840a8a899f68501a2e5ee/FLAG655a73170 [2019-11-24 05:22:52,355 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:22:52,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product55.cil.c [2019-11-24 05:22:52,380 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ebd55703/686fba9ff5e840a8a899f68501a2e5ee/FLAG655a73170 [2019-11-24 05:22:52,681 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ebd55703/686fba9ff5e840a8a899f68501a2e5ee [2019-11-24 05:22:52,695 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:22:52,696 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:22:52,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:22:52,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:22:52,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:22:52,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:22:52" (1/1) ... [2019-11-24 05:22:52,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@553c610b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:52, skipping insertion in model container [2019-11-24 05:22:52,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:22:52" (1/1) ... [2019-11-24 05:22:52,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:22:52,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:22:53,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:22:53,261 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:22:53,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:22:53,411 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:22:53,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:53 WrapperNode [2019-11-24 05:22:53,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:22:53,413 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:22:53,414 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:22:53,414 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:22:53,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:53" (1/1) ... [2019-11-24 05:22:53,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:53" (1/1) ... [2019-11-24 05:22:53,504 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:22:53,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:22:53,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:22:53,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:22:53,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:53" (1/1) ... [2019-11-24 05:22:53,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:53" (1/1) ... [2019-11-24 05:22:53,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:53" (1/1) ... [2019-11-24 05:22:53,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:53" (1/1) ... [2019-11-24 05:22:53,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:53" (1/1) ... [2019-11-24 05:22:53,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:53" (1/1) ... [2019-11-24 05:22:53,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:53" (1/1) ... [2019-11-24 05:22:53,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:22:53,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:22:53,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:22:53,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:22:53,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:53" (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 05:22:53,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:22:53,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:22:53,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:22:53,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:22:57,120 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:22:57,121 INFO L284 CfgBuilder]: Removed 282 assume(true) statements. [2019-11-24 05:22:57,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:22:57 BoogieIcfgContainer [2019-11-24 05:22:57,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:22:57,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:22:57,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:22:57,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:22:57,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:22:52" (1/3) ... [2019-11-24 05:22:57,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@178a5b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:22:57, skipping insertion in model container [2019-11-24 05:22:57,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:53" (2/3) ... [2019-11-24 05:22:57,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@178a5b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:22:57, skipping insertion in model container [2019-11-24 05:22:57,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:22:57" (3/3) ... [2019-11-24 05:22:57,138 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product55.cil.c [2019-11-24 05:22:57,147 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:22:57,155 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:22:57,167 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:22:57,195 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:22:57,196 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:22:57,196 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:22:57,196 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:22:57,196 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:22:57,197 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:22:57,197 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:22:57,197 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:22:57,213 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:22:57,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:22:57,221 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:22:57,222 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:22:57,223 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:22:57,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:22:57,229 INFO L82 PathProgramCache]: Analyzing trace with hash -2119266546, now seen corresponding path program 1 times [2019-11-24 05:22:57,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:22:57,240 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713139290] [2019-11-24 05:22:57,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:22:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:22:57,659 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 05:22:57,660 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713139290] [2019-11-24 05:22:57,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:22:57,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:22:57,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864139372] [2019-11-24 05:22:57,668 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:22:57,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:22:57,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:22:57,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:22:57,685 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2019-11-24 05:22:57,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:22:57,785 INFO L93 Difference]: Finished difference Result 68 states and 105 transitions. [2019-11-24 05:22:57,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:22:57,788 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-24 05:22:57,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:22:57,805 INFO L225 Difference]: With dead ends: 68 [2019-11-24 05:22:57,805 INFO L226 Difference]: Without dead ends: 40 [2019-11-24 05:22:57,813 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 05:22:57,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-24 05:22:57,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-11-24 05:22:57,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-24 05:22:57,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 54 transitions. [2019-11-24 05:22:57,865 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 54 transitions. Word has length 8 [2019-11-24 05:22:57,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:22:57,865 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 54 transitions. [2019-11-24 05:22:57,866 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:22:57,866 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2019-11-24 05:22:57,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 05:22:57,868 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:22:57,868 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-24 05:22:57,868 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:22:57,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:22:57,869 INFO L82 PathProgramCache]: Analyzing trace with hash 117176889, now seen corresponding path program 1 times [2019-11-24 05:22:57,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:22:57,869 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194875945] [2019-11-24 05:22:57,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:22:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:22:58,321 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 05:22:58,322 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194875945] [2019-11-24 05:22:58,322 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543486373] [2019-11-24 05:22:58,322 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 05:22:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:22:58,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 45 conjunts are in the unsatisfiable core [2019-11-24 05:22:58,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:22:58,558 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:58,561 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:58,812 WARN L192 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2019-11-24 05:22:59,037 WARN L192 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-11-24 05:22:59,302 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 30 [2019-11-24 05:22:59,379 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,383 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,390 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,403 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,408 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,413 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,420 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,421 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,425 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,530 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,558 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 05:22:59,559 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:22:59,598 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,604 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,609 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,612 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,614 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,620 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,626 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,628 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,632 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,634 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,636 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,638 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,640 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,646 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,649 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,652 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,653 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,655 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,657 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,658 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,660 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,662 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,664 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,667 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,669 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,671 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,672 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,676 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,677 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,677 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,678 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,678 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,684 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,686 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,689 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,695 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,704 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,706 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,709 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,712 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,715 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,718 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,719 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,726 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,730 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,733 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,734 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,736 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,738 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,739 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,742 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,745 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,747 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,750 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,752 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,755 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,756 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,933 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,934 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,935 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,937 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,938 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:59,958 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 05:22:59,958 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [225508428] [2019-11-24 05:22:59,996 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:22:59,996 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:23:00,005 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:23:00,015 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:23:00,016 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:23:08,702 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 478 [2019-11-24 05:23:10,422 WARN L192 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:23:10,561 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 486 [2019-11-24 05:23:13,432 WARN L192 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 775 DAG size of output: 738 [2019-11-24 05:23:16,680 WARN L192 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 844 DAG size of output: 844 [2019-11-24 05:23:17,760 WARN L192 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 714 [2019-11-24 05:23:18,103 WARN L192 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 714 [2019-11-24 05:23:18,451 WARN L192 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 714 [2019-11-24 05:23:18,766 WARN L192 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 714 [2019-11-24 05:23:19,055 WARN L192 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 714 [2019-11-24 05:23:19,339 WARN L192 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 714 [2019-11-24 05:23:21,122 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 05:23:25,661 WARN L192 SmtUtils]: Spent 4.25 s on a formula simplification. DAG size of input: 486 DAG size of output: 431 [2019-11-24 05:23:53,724 WARN L192 SmtUtils]: Spent 27.52 s on a formula simplification. DAG size of input: 714 DAG size of output: 522