/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_spec5_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:37:52,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:37:52,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:37:52,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:37:52,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:37:52,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:37:52,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:37:52,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:37:52,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:37:52,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:37:52,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:37:52,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:37:52,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:37:52,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:37:52,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:37:52,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:37:52,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:37:52,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:37:52,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:37:52,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:37:52,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:37:52,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:37:52,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:37:52,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:37:52,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:37:52,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:37:52,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:37:52,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:37:52,654 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 05:37:52,686 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:37:52,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:37:52,687 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:37:52,687 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:37:52,688 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:37:52,688 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:37:52,688 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:37:52,688 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:37:52,688 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:37:52,689 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:37:52,693 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:37:52,693 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:37:52,693 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:37:52,694 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:37:52,694 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:37:52,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:37:52,697 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:37:52,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:37:52,697 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:37:52,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:37:52,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:37:52,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:37:52,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:37:52,698 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:37:52,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:37:52,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:37:52,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:37:52,699 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:37:52,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:37:52,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:37:52,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:37:52,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:37:52,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:37:52,700 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:37:52,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:37:52,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:37:52,702 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:37:52,702 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:37:52,955 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:37:52,975 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:37:52,979 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:37:52,980 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:37:52,981 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:37:52,982 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product61.cil.c [2019-11-24 05:37:53,054 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4734f620/6d36abfe4a02432aa024b0180b4ebae8/FLAG52312b544 [2019-11-24 05:37:53,573 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:37:53,574 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product61.cil.c [2019-11-24 05:37:53,586 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4734f620/6d36abfe4a02432aa024b0180b4ebae8/FLAG52312b544 [2019-11-24 05:37:53,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4734f620/6d36abfe4a02432aa024b0180b4ebae8 [2019-11-24 05:37:53,949 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:37:53,951 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:37:53,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:37:53,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:37:53,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:37:53,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:37:53" (1/1) ... [2019-11-24 05:37:53,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6768693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:53, skipping insertion in model container [2019-11-24 05:37:53,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:37:53" (1/1) ... [2019-11-24 05:37:53,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:37:54,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:37:54,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:37:54,636 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:37:54,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:37:54,817 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:37:54,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:54 WrapperNode [2019-11-24 05:37:54,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:37:54,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:37:54,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:37:54,819 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:37:54,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:54" (1/1) ... [2019-11-24 05:37:54,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:54" (1/1) ... [2019-11-24 05:37:54,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:37:54,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:37:54,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:37:54,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:37:54,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:54" (1/1) ... [2019-11-24 05:37:54,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:54" (1/1) ... [2019-11-24 05:37:54,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:54" (1/1) ... [2019-11-24 05:37:54,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:54" (1/1) ... [2019-11-24 05:37:54,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:54" (1/1) ... [2019-11-24 05:37:55,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:54" (1/1) ... [2019-11-24 05:37:55,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:54" (1/1) ... [2019-11-24 05:37:55,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:37:55,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:37:55,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:37:55,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:37:55,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:54" (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 05:37:55,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:37:55,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:37:55,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:37:55,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:37:59,050 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:37:59,050 INFO L284 CfgBuilder]: Removed 362 assume(true) statements. [2019-11-24 05:37:59,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:37:59 BoogieIcfgContainer [2019-11-24 05:37:59,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:37:59,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:37:59,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:37:59,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:37:59,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:37:53" (1/3) ... [2019-11-24 05:37:59,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57c78cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:37:59, skipping insertion in model container [2019-11-24 05:37:59,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:37:54" (2/3) ... [2019-11-24 05:37:59,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57c78cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:37:59, skipping insertion in model container [2019-11-24 05:37:59,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:37:59" (3/3) ... [2019-11-24 05:37:59,063 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product61.cil.c [2019-11-24 05:37:59,073 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:37:59,081 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:37:59,092 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:37:59,118 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:37:59,118 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:37:59,119 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:37:59,119 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:37:59,119 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:37:59,119 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:37:59,119 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:37:59,120 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:37:59,136 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:37:59,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:37:59,143 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:37:59,144 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:37:59,144 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:37:59,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:37:59,151 INFO L82 PathProgramCache]: Analyzing trace with hash 369318588, now seen corresponding path program 1 times [2019-11-24 05:37:59,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:37:59,162 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519648411] [2019-11-24 05:37:59,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:37:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:37:59,513 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 05:37:59,514 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519648411] [2019-11-24 05:37:59,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:37:59,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:37:59,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882992112] [2019-11-24 05:37:59,520 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:37:59,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:37:59,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:37:59,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:37:59,537 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-11-24 05:37:59,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:37:59,558 INFO L93 Difference]: Finished difference Result 50 states and 75 transitions. [2019-11-24 05:37:59,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:37:59,560 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 05:37:59,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:37:59,571 INFO L225 Difference]: With dead ends: 50 [2019-11-24 05:37:59,572 INFO L226 Difference]: Without dead ends: 24 [2019-11-24 05:37:59,575 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:37:59,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-24 05:37:59,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-24 05:37:59,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-24 05:37:59,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2019-11-24 05:37:59,610 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 8 [2019-11-24 05:37:59,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:37:59,610 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2019-11-24 05:37:59,610 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:37:59,611 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2019-11-24 05:37:59,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:37:59,611 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:37:59,611 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:37:59,612 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:37:59,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:37:59,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1354174840, now seen corresponding path program 1 times [2019-11-24 05:37:59,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:37:59,613 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721776547] [2019-11-24 05:37:59,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:37:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:37:59,979 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 05:37:59,980 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721776547] [2019-11-24 05:37:59,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:37:59,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:37:59,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671004813] [2019-11-24 05:37:59,984 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:37:59,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:37:59,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:37:59,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:37:59,985 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand 5 states. [2019-11-24 05:38:00,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:38:00,197 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2019-11-24 05:38:00,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-24 05:38:00,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-24 05:38:00,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:38:00,199 INFO L225 Difference]: With dead ends: 80 [2019-11-24 05:38:00,199 INFO L226 Difference]: Without dead ends: 45 [2019-11-24 05:38:00,200 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-24 05:38:00,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-24 05:38:00,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28. [2019-11-24 05:38:00,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-24 05:38:00,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2019-11-24 05:38:00,208 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 8 [2019-11-24 05:38:00,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:38:00,208 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2019-11-24 05:38:00,208 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:38:00,208 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2019-11-24 05:38:00,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 05:38:00,209 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:38:00,211 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:38:00,211 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:38:00,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:38:00,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1065772799, now seen corresponding path program 1 times [2019-11-24 05:38:00,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:38:00,212 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830465366] [2019-11-24 05:38:00,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:38:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:38:00,581 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 05:38:00,581 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830465366] [2019-11-24 05:38:00,582 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790985947] [2019-11-24 05:38:00,582 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 05:38:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:38:00,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-24 05:38:00,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:38:00,807 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:38:00,846 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:38:00,854 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 05:38:00,854 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:38:00,913 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:38:00,914 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:38:00,916 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:38:00,923 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:38:00,933 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:38:00,935 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:38:00,938 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:38:00,941 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:38:00,975 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 05:38:00,976 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [444057488] [2019-11-24 05:38:01,024 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:38:01,025 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:38:01,031 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:38:01,040 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:38:01,041 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:38:11,040 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 478 [2019-11-24 05:38:12,833 WARN L192 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:38:13,000 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 486 [2019-11-24 05:38:13,637 WARN L192 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 709 DAG size of output: 609 [2019-11-24 05:38:15,447 WARN L192 SmtUtils]: Spent 905.00 ms on a formula simplification that was a NOOP. DAG size: 710 [2019-11-24 05:38:20,117 WARN L192 SmtUtils]: Spent 3.61 s on a formula simplification. DAG size of input: 1106 DAG size of output: 914 [2019-11-24 05:38:30,861 WARN L192 SmtUtils]: Spent 2.56 s on a formula simplification. DAG size of input: 888 DAG size of output: 888 [2019-11-24 05:38:50,713 WARN L192 SmtUtils]: Spent 10.26 s on a formula simplification. DAG size of input: 1698 DAG size of output: 1182 [2019-11-24 05:39:00,661 WARN L192 SmtUtils]: Spent 9.93 s on a formula simplification. DAG size of input: 1698 DAG size of output: 1182 [2019-11-24 05:39:07,276 WARN L192 SmtUtils]: Spent 6.61 s on a formula simplification. DAG size of input: 1128 DAG size of output: 1098 [2019-11-24 05:39:07,284 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 05:39:12,676 WARN L192 SmtUtils]: Spent 5.28 s on a formula simplification. DAG size of input: 486 DAG size of output: 431