/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_spec4_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:29:25,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:29:25,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:29:25,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:29:25,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:29:25,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:29:25,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:29:25,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:29:25,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:29:25,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:29:25,727 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:29:25,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:29:25,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:29:25,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:29:25,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:29:25,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:29:25,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:29:25,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:29:25,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:29:25,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:29:25,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:29:25,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:29:25,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:29:25,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:29:25,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:29:25,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:29:25,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:29:25,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:29:25,770 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 05:29:25,799 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:29:25,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:29:25,809 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:29:25,809 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:29:25,809 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:29:25,809 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:29:25,809 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:29:25,810 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:29:25,810 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:29:25,810 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:29:25,810 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:29:25,810 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:29:25,811 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:29:25,811 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:29:25,811 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:29:25,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:29:25,813 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:29:25,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:29:25,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:29:25,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:29:25,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:29:25,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:29:25,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:29:25,815 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:29:25,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:29:25,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:29:25,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:29:25,816 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:29:25,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:29:25,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:29:25,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:29:25,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:29:25,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:29:25,818 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:29:25,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:29:25,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:29:25,820 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:29:25,820 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:29:26,082 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:29:26,097 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:29:26,101 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:29:26,102 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:29:26,103 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:29:26,103 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product49.cil.c [2019-11-24 05:29:26,173 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d96ebb3a0/c50356c26b68449887ef53126802dbf8/FLAGe5f8ea837 [2019-11-24 05:29:26,763 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:29:26,764 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product49.cil.c [2019-11-24 05:29:26,789 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d96ebb3a0/c50356c26b68449887ef53126802dbf8/FLAGe5f8ea837 [2019-11-24 05:29:27,013 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d96ebb3a0/c50356c26b68449887ef53126802dbf8 [2019-11-24 05:29:27,021 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:29:27,023 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:29:27,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:29:27,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:29:27,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:29:27,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:29:27" (1/1) ... [2019-11-24 05:29:27,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@474dcd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:29:27, skipping insertion in model container [2019-11-24 05:29:27,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:29:27" (1/1) ... [2019-11-24 05:29:27,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:29:27,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:29:27,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:29:27,539 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:29:27,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:29:27,662 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:29:27,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:29:27 WrapperNode [2019-11-24 05:29:27,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:29:27,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:29:27,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:29:27,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:29:27,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:29:27" (1/1) ... [2019-11-24 05:29:27,712 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:29:27" (1/1) ... [2019-11-24 05:29:27,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:29:27,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:29:27,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:29:27,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:29:27,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:29:27" (1/1) ... [2019-11-24 05:29:27,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:29:27" (1/1) ... [2019-11-24 05:29:27,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:29:27" (1/1) ... [2019-11-24 05:29:27,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:29:27" (1/1) ... [2019-11-24 05:29:27,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:29:27" (1/1) ... [2019-11-24 05:29:27,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:29:27" (1/1) ... [2019-11-24 05:29:27,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:29:27" (1/1) ... [2019-11-24 05:29:27,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:29:27,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:29:27,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:29:27,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:29:27,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:29:27" (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 05:29:27,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:29:27,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:29:27,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:29:27,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:29:30,290 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:29:30,291 INFO L284 CfgBuilder]: Removed 156 assume(true) statements. [2019-11-24 05:29:30,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:29:30 BoogieIcfgContainer [2019-11-24 05:29:30,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:29:30,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:29:30,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:29:30,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:29:30,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:29:27" (1/3) ... [2019-11-24 05:29:30,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1309461d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:29:30, skipping insertion in model container [2019-11-24 05:29:30,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:29:27" (2/3) ... [2019-11-24 05:29:30,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1309461d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:29:30, skipping insertion in model container [2019-11-24 05:29:30,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:29:30" (3/3) ... [2019-11-24 05:29:30,300 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product49.cil.c [2019-11-24 05:29:30,310 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:29:30,317 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:29:30,328 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:29:30,352 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:29:30,352 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:29:30,352 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:29:30,353 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:29:30,353 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:29:30,353 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:29:30,353 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:29:30,353 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:29:30,368 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-24 05:29:30,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 05:29:30,374 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:29:30,374 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:29:30,375 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:29:30,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:29:30,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1060636538, now seen corresponding path program 1 times [2019-11-24 05:29:30,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:29:30,391 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964693715] [2019-11-24 05:29:30,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:29:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:29:30,860 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 05:29:30,861 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964693715] [2019-11-24 05:29:30,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:29:30,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:29:30,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851222730] [2019-11-24 05:29:30,869 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 05:29:30,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:29:30,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 05:29:30,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 05:29:30,887 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 4 states. [2019-11-24 05:29:31,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:29:31,004 INFO L93 Difference]: Finished difference Result 61 states and 87 transitions. [2019-11-24 05:29:31,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 05:29:31,007 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-24 05:29:31,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:29:31,017 INFO L225 Difference]: With dead ends: 61 [2019-11-24 05:29:31,017 INFO L226 Difference]: Without dead ends: 27 [2019-11-24 05:29:31,020 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:29:31,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-24 05:29:31,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2019-11-24 05:29:31,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-24 05:29:31,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-11-24 05:29:31,053 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 7 [2019-11-24 05:29:31,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:29:31,053 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-24 05:29:31,053 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 05:29:31,053 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-11-24 05:29:31,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-24 05:29:31,054 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:29:31,054 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-11-24 05:29:31,055 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:29:31,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:29:31,055 INFO L82 PathProgramCache]: Analyzing trace with hash -59437706, now seen corresponding path program 1 times [2019-11-24 05:29:31,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:29:31,056 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86624227] [2019-11-24 05:29:31,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:29:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:29:31,334 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 05:29:31,334 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86624227] [2019-11-24 05:29:31,335 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590345085] [2019-11-24 05:29:31,335 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 05:29:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:29:31,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 32 conjunts are in the unsatisfiable core [2019-11-24 05:29:31,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:29:31,732 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2019-11-24 05:29:31,835 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:31,839 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:31,843 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:31,846 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:31,851 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:31,855 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:31,859 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:31,860 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:31,864 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:31,869 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:31,870 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:31,874 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:31,975 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 05:29:31,975 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:29:32,012 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:32,013 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:32,018 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:32,019 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:32,026 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:32,029 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:32,033 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:32,038 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:32,041 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:32,049 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:32,050 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:32,216 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:32,222 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:32,227 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:32,229 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 05:29:32,230 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:32,233 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:32,245 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:32,274 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:32,278 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:32,305 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:32,310 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:32,312 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 05:29:32,316 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:32,325 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:32,329 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:32,335 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:32,340 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:29:32,387 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 05:29:32,387 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1710010026] [2019-11-24 05:29:32,438 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-11-24 05:29:32,439 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:29:32,447 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:29:32,457 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:29:32,457 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:29:42,320 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 476 [2019-11-24 05:29:44,039 WARN L192 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:29:44,170 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 484 [2019-11-24 05:29:44,712 WARN L192 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 577 [2019-11-24 05:29:45,575 WARN L192 SmtUtils]: Spent 656.00 ms on a formula simplification that was a NOOP. DAG size: 677 [2019-11-24 05:29:48,540 WARN L192 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 846 DAG size of output: 815 [2019-11-24 05:29:56,411 WARN L192 SmtUtils]: Spent 2.51 s on a formula simplification. DAG size of input: 814 DAG size of output: 810 [2019-11-24 05:30:23,844 WARN L192 SmtUtils]: Spent 14.27 s on a formula simplification. DAG size of input: 1543 DAG size of output: 1286 [2019-11-24 05:30:39,194 WARN L192 SmtUtils]: Spent 15.33 s on a formula simplification. DAG size of input: 1543 DAG size of output: 1286 [2019-11-24 05:30:52,860 WARN L192 SmtUtils]: Spent 13.65 s on a formula simplification. DAG size of input: 1255 DAG size of output: 1219 [2019-11-24 05:30:52,871 INFO L180 IcfgInterpreter]: Interpretation finished