/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/elevator_spec14_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:35:30,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:35:30,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:35:30,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:35:30,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:35:30,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:35:30,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:35:30,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:35:30,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:35:30,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:35:30,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:35:30,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:35:30,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:35:30,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:35:30,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:35:30,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:35:30,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:35:30,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:35:30,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:35:30,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:35:30,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:35:30,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:35:30,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:35:30,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:35:30,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:35:30,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:35:30,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:35:30,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:35:30,704 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 04:35:30,718 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:35:30,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:35:30,720 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:35:30,720 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:35:30,720 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:35:30,720 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:35:30,720 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:35:30,721 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:35:30,721 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:35:30,721 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:35:30,721 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:35:30,721 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:35:30,722 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:35:30,722 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:35:30,722 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:35:30,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:35:30,723 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:35:30,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:35:30,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:35:30,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:35:30,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:35:30,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:35:30,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:35:30,724 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:35:30,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:35:30,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:35:30,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:35:30,725 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:35:30,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:35:30,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:35:30,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:35:30,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:35:30,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:35:30,726 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:35:30,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:35:30,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:35:30,727 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:35:30,727 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:35:31,019 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:35:31,038 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:35:31,042 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:35:31,044 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:35:31,044 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:35:31,045 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec14_product23.cil.c [2019-11-24 04:35:31,122 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b1cd0503/1762eb5aa0b5484bb2641af55717ec73/FLAGb2c2b4f03 [2019-11-24 04:35:31,745 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:35:31,745 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product23.cil.c [2019-11-24 04:35:31,764 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b1cd0503/1762eb5aa0b5484bb2641af55717ec73/FLAGb2c2b4f03 [2019-11-24 04:35:31,938 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b1cd0503/1762eb5aa0b5484bb2641af55717ec73 [2019-11-24 04:35:31,946 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:35:31,947 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:35:31,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:35:31,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:35:31,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:35:31,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:35:31" (1/1) ... [2019-11-24 04:35:31,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1348e435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:35:31, skipping insertion in model container [2019-11-24 04:35:31,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:35:31" (1/1) ... [2019-11-24 04:35:31,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:35:32,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:35:32,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:35:32,773 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:35:32,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:35:32,999 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:35:32,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:35:32 WrapperNode [2019-11-24 04:35:33,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:35:33,000 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:35:33,001 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:35:33,001 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:35:33,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:35:32" (1/1) ... [2019-11-24 04:35:33,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:35:32" (1/1) ... [2019-11-24 04:35:33,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:35:33,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:35:33,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:35:33,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:35:33,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:35:32" (1/1) ... [2019-11-24 04:35:33,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:35:32" (1/1) ... [2019-11-24 04:35:33,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:35:32" (1/1) ... [2019-11-24 04:35:33,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:35:32" (1/1) ... [2019-11-24 04:35:33,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:35:32" (1/1) ... [2019-11-24 04:35:33,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:35:32" (1/1) ... [2019-11-24 04:35:33,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:35:32" (1/1) ... [2019-11-24 04:35:34,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:35:34,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:35:34,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:35:34,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:35:34,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:35:32" (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 04:35:34,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:35:34,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 04:35:34,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:35:34,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:36:45,853 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:36:45,854 INFO L284 CfgBuilder]: Removed 1963 assume(true) statements. [2019-11-24 04:36:45,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:36:45 BoogieIcfgContainer [2019-11-24 04:36:45,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:36:45,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:36:45,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:36:45,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:36:45,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:35:31" (1/3) ... [2019-11-24 04:36:45,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e196f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:36:45, skipping insertion in model container [2019-11-24 04:36:45,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:35:32" (2/3) ... [2019-11-24 04:36:45,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e196f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:36:45, skipping insertion in model container [2019-11-24 04:36:45,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:36:45" (3/3) ... [2019-11-24 04:36:45,865 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product23.cil.c [2019-11-24 04:36:45,874 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:36:45,888 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-11-24 04:36:45,903 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-24 04:36:45,951 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:36:45,951 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:36:45,951 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:36:45,951 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:36:45,952 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:36:45,952 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:36:45,952 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:36:45,952 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:36:46,015 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states. [2019-11-24 04:36:46,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 04:36:46,027 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:36:46,028 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:36:46,028 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:36:46,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:36:46,033 INFO L82 PathProgramCache]: Analyzing trace with hash 847364851, now seen corresponding path program 1 times [2019-11-24 04:36:46,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:36:46,040 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730611383] [2019-11-24 04:36:46,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:36:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:36:46,910 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 04:36:46,911 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730611383] [2019-11-24 04:36:46,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:36:46,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:36:46,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509301602] [2019-11-24 04:36:46,918 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 04:36:46,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:36:46,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 04:36:46,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:36:46,935 INFO L87 Difference]: Start difference. First operand 3013 states. Second operand 5 states. [2019-11-24 04:36:49,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:36:49,212 INFO L93 Difference]: Finished difference Result 6556 states and 12672 transitions. [2019-11-24 04:36:49,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 04:36:49,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-24 04:36:49,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:36:49,278 INFO L225 Difference]: With dead ends: 6556 [2019-11-24 04:36:49,278 INFO L226 Difference]: Without dead ends: 3948 [2019-11-24 04:36:49,293 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-24 04:36:49,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3948 states. [2019-11-24 04:36:49,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3948 to 3011. [2019-11-24 04:36:49,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3011 states. [2019-11-24 04:36:49,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3011 states to 3011 states and 5815 transitions. [2019-11-24 04:36:49,514 INFO L78 Accepts]: Start accepts. Automaton has 3011 states and 5815 transitions. Word has length 11 [2019-11-24 04:36:49,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:36:49,514 INFO L462 AbstractCegarLoop]: Abstraction has 3011 states and 5815 transitions. [2019-11-24 04:36:49,514 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 04:36:49,515 INFO L276 IsEmpty]: Start isEmpty. Operand 3011 states and 5815 transitions. [2019-11-24 04:36:49,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-24 04:36:49,524 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:36:49,524 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:36:49,524 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:36:49,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:36:49,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1904632188, now seen corresponding path program 1 times [2019-11-24 04:36:49,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:36:49,525 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314932527] [2019-11-24 04:36:49,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:36:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:36:49,675 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 04:36:49,677 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314932527] [2019-11-24 04:36:49,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:36:49,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-24 04:36:49,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302901703] [2019-11-24 04:36:49,680 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 04:36:49,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:36:49,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 04:36:49,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-24 04:36:49,682 INFO L87 Difference]: Start difference. First operand 3011 states and 5815 transitions. Second operand 6 states. [2019-11-24 04:36:50,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:36:50,940 INFO L93 Difference]: Finished difference Result 10145 states and 19455 transitions. [2019-11-24 04:36:50,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-24 04:36:50,940 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-24 04:36:50,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:36:50,983 INFO L225 Difference]: With dead ends: 10145 [2019-11-24 04:36:50,984 INFO L226 Difference]: Without dead ends: 7452 [2019-11-24 04:36:50,994 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2019-11-24 04:36:51,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7452 states. [2019-11-24 04:36:51,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7452 to 3869. [2019-11-24 04:36:51,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3869 states. [2019-11-24 04:36:51,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3869 states to 3869 states and 7455 transitions. [2019-11-24 04:36:51,201 INFO L78 Accepts]: Start accepts. Automaton has 3869 states and 7455 transitions. Word has length 16 [2019-11-24 04:36:51,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:36:51,202 INFO L462 AbstractCegarLoop]: Abstraction has 3869 states and 7455 transitions. [2019-11-24 04:36:51,202 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 04:36:51,202 INFO L276 IsEmpty]: Start isEmpty. Operand 3869 states and 7455 transitions. [2019-11-24 04:36:51,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-24 04:36:51,203 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:36:51,204 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:36:51,205 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:36:51,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:36:51,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1092362887, now seen corresponding path program 1 times [2019-11-24 04:36:51,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:36:51,206 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066107287] [2019-11-24 04:36:51,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:36:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:36:51,320 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 04:36:51,320 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066107287] [2019-11-24 04:36:51,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:36:51,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-24 04:36:51,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803914635] [2019-11-24 04:36:51,325 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 04:36:51,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:36:51,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 04:36:51,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-24 04:36:51,326 INFO L87 Difference]: Start difference. First operand 3869 states and 7455 transitions. Second operand 6 states.