/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_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:36:19,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:36:19,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:36:19,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:36:19,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:36:19,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:36:19,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:36:19,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:36:19,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:36:19,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:36:19,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:36:19,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:36:19,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:36:19,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:36:19,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:36:19,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:36:19,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:36:19,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:36:19,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:36:19,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:36:19,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:36:19,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:36:19,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:36:19,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:36:19,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:36:19,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:36:19,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:36:19,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:36:19,730 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 05:36:19,746 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:36:19,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:36:19,747 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:36:19,747 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:36:19,747 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:36:19,747 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:36:19,748 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:36:19,748 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:36:19,748 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:36:19,748 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:36:19,748 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:36:19,748 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:36:19,749 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:36:19,749 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:36:19,749 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:36:19,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:36:19,750 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:36:19,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:36:19,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:36:19,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:36:19,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:36:19,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:36:19,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:36:19,751 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:36:19,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:36:19,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:36:19,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:36:19,752 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:36:19,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:36:19,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:36:19,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:36:19,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:36:19,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:36:19,753 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:36:19,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:36:19,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:36:19,754 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:36:19,754 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:36:20,049 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:36:20,061 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:36:20,064 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:36:20,066 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:36:20,066 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:36:20,067 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product53.cil.c [2019-11-24 05:36:20,128 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07840e7c4/74b179d04bae49a19396656f4724a78c/FLAG97ddaad70 [2019-11-24 05:36:20,668 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:36:20,668 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product53.cil.c [2019-11-24 05:36:20,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07840e7c4/74b179d04bae49a19396656f4724a78c/FLAG97ddaad70 [2019-11-24 05:36:21,030 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07840e7c4/74b179d04bae49a19396656f4724a78c [2019-11-24 05:36:21,038 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:36:21,040 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:36:21,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:36:21,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:36:21,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:36:21,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:36:21" (1/1) ... [2019-11-24 05:36:21,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39ed7278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:21, skipping insertion in model container [2019-11-24 05:36:21,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:36:21" (1/1) ... [2019-11-24 05:36:21,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:36:21,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:36:21,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:36:21,570 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:36:21,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:36:21,742 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:36:21,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:21 WrapperNode [2019-11-24 05:36:21,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:36:21,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:36:21,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:36:21,744 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:36:21,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:21" (1/1) ... [2019-11-24 05:36:21,774 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:21" (1/1) ... [2019-11-24 05:36:21,832 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:36:21,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:36:21,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:36:21,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:36:21,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:21" (1/1) ... [2019-11-24 05:36:21,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:21" (1/1) ... [2019-11-24 05:36:21,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:21" (1/1) ... [2019-11-24 05:36:21,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:21" (1/1) ... [2019-11-24 05:36:21,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:21" (1/1) ... [2019-11-24 05:36:21,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:21" (1/1) ... [2019-11-24 05:36:21,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:21" (1/1) ... [2019-11-24 05:36:21,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:36:21,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:36:21,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:36:21,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:36:21,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:21" (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 05:36:22,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:36:22,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:36:22,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:36:22,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:36:25,401 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:36:25,401 INFO L284 CfgBuilder]: Removed 290 assume(true) statements. [2019-11-24 05:36:25,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:36:25 BoogieIcfgContainer [2019-11-24 05:36:25,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:36:25,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:36:25,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:36:25,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:36:25,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:36:21" (1/3) ... [2019-11-24 05:36:25,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f0b5ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:36:25, skipping insertion in model container [2019-11-24 05:36:25,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:21" (2/3) ... [2019-11-24 05:36:25,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f0b5ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:36:25, skipping insertion in model container [2019-11-24 05:36:25,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:36:25" (3/3) ... [2019-11-24 05:36:25,413 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product53.cil.c [2019-11-24 05:36:25,423 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:36:25,431 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:36:25,442 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:36:25,472 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:36:25,472 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:36:25,472 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:36:25,472 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:36:25,473 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:36:25,473 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:36:25,473 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:36:25,474 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:36:25,489 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:36:25,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:36:25,498 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:36:25,499 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:36:25,499 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:36:25,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:36:25,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1392875238, now seen corresponding path program 1 times [2019-11-24 05:36:25,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:36:25,515 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273285173] [2019-11-24 05:36:25,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:36:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:36:25,787 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 05:36:25,788 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273285173] [2019-11-24 05:36:25,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:36:25,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:36:25,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417447427] [2019-11-24 05:36:25,794 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:36:25,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:36:25,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:36:25,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:36:25,806 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-11-24 05:36:25,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:36:25,825 INFO L93 Difference]: Finished difference Result 50 states and 75 transitions. [2019-11-24 05:36:25,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:36:25,827 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 05:36:25,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:36:25,835 INFO L225 Difference]: With dead ends: 50 [2019-11-24 05:36:25,836 INFO L226 Difference]: Without dead ends: 24 [2019-11-24 05:36:25,839 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 05:36:25,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-24 05:36:25,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-24 05:36:25,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-24 05:36:25,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2019-11-24 05:36:25,877 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 8 [2019-11-24 05:36:25,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:36:25,878 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2019-11-24 05:36:25,878 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:36:25,878 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2019-11-24 05:36:25,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:36:25,879 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:36:25,879 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:36:25,879 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:36:25,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:36:25,880 INFO L82 PathProgramCache]: Analyzing trace with hash 677545578, now seen corresponding path program 1 times [2019-11-24 05:36:25,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:36:25,880 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224493418] [2019-11-24 05:36:25,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:36:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:36:26,261 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 05:36:26,262 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224493418] [2019-11-24 05:36:26,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:36:26,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:36:26,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028416599] [2019-11-24 05:36:26,264 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:36:26,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:36:26,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:36:26,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:36:26,265 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand 5 states. [2019-11-24 05:36:26,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:36:26,445 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2019-11-24 05:36:26,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-24 05:36:26,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-24 05:36:26,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:36:26,447 INFO L225 Difference]: With dead ends: 80 [2019-11-24 05:36:26,447 INFO L226 Difference]: Without dead ends: 45 [2019-11-24 05:36:26,448 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 05:36:26,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-24 05:36:26,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28. [2019-11-24 05:36:26,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-24 05:36:26,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2019-11-24 05:36:26,456 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 8 [2019-11-24 05:36:26,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:36:26,456 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2019-11-24 05:36:26,456 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:36:26,456 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2019-11-24 05:36:26,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 05:36:26,457 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:36:26,457 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:36:26,457 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:36:26,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:36:26,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1501031176, now seen corresponding path program 1 times [2019-11-24 05:36:26,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:36:26,459 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132482987] [2019-11-24 05:36:26,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:36:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:36:26,661 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 05:36:26,661 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132482987] [2019-11-24 05:36:26,662 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152284707] [2019-11-24 05:36:26,662 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 05:36:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:36:26,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-24 05:36:26,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:36:26,859 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:26,861 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:26,865 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:26,885 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:26,901 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 05:36:26,901 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:36:26,951 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:26,954 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:26,960 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:26,968 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:26,974 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:26,987 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:26,992 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:27,016 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 05:36:27,017 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1097391228] [2019-11-24 05:36:27,041 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:36:27,042 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:36:27,048 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:36:27,054 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:36:27,055 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:36:37,164 WARN L192 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 478 [2019-11-24 05:36:38,935 WARN L192 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:36:39,086 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 486 [2019-11-24 05:36:40,027 WARN L192 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 586 DAG size of output: 586 [2019-11-24 05:36:41,113 WARN L192 SmtUtils]: Spent 811.00 ms on a formula simplification that was a NOOP. DAG size: 688 [2019-11-24 05:36:41,911 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 05:36:46,583 WARN L192 SmtUtils]: Spent 4.46 s on a formula simplification. DAG size of input: 486 DAG size of output: 431 [2019-11-24 05:37:03,710 WARN L192 SmtUtils]: Spent 16.73 s on a formula simplification. DAG size of input: 688 DAG size of output: 515