/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_spec3_product11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:43:44,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:43:44,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:43:44,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:43:44,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:43:44,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:43:44,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:43:44,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:43:44,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:43:44,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:43:44,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:43:44,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:43:44,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:43:44,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:43:44,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:43:44,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:43:44,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:43:44,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:43:44,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:43:44,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:43:44,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:43:44,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:43:44,974 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:43:44,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:43:44,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:43:44,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:43:44,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:43:44,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:43:44,990 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 04:43:45,026 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:43:45,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:43:45,027 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:43:45,028 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:43:45,028 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:43:45,028 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:43:45,028 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:43:45,028 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:43:45,028 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:43:45,031 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:43:45,031 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:43:45,031 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:43:45,031 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:43:45,032 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:43:45,032 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:43:45,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:43:45,033 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:43:45,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:43:45,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:43:45,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:43:45,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:43:45,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:43:45,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:43:45,034 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:43:45,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:43:45,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:43:45,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:43:45,035 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:43:45,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:43:45,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:43:45,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:43:45,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:43:45,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:43:45,036 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:43:45,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:43:45,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:43:45,038 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:43:45,038 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:43:45,313 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:43:45,326 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:43:45,330 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:43:45,331 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:43:45,332 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:43:45,333 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product11.cil.c [2019-11-24 04:43:45,395 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/954edabc9/8553ea303cf44e35bd1a359ea8e0bdd7/FLAGf289ec374 [2019-11-24 04:43:46,005 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:43:46,006 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product11.cil.c [2019-11-24 04:43:46,047 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/954edabc9/8553ea303cf44e35bd1a359ea8e0bdd7/FLAGf289ec374 [2019-11-24 04:43:46,248 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/954edabc9/8553ea303cf44e35bd1a359ea8e0bdd7 [2019-11-24 04:43:46,259 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:43:46,260 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:43:46,261 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:43:46,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:43:46,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:43:46,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:43:46" (1/1) ... [2019-11-24 04:43:46,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f632913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:43:46, skipping insertion in model container [2019-11-24 04:43:46,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:43:46" (1/1) ... [2019-11-24 04:43:46,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:43:46,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:43:47,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:43:47,036 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:43:47,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:43:47,296 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:43:47,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:43:47 WrapperNode [2019-11-24 04:43:47,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:43:47,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:43:47,297 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:43:47,298 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:43:47,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:43:47" (1/1) ... [2019-11-24 04:43:47,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:43:47" (1/1) ... [2019-11-24 04:43:47,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:43:47,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:43:47,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:43:47,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:43:47,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:43:47" (1/1) ... [2019-11-24 04:43:47,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:43:47" (1/1) ... [2019-11-24 04:43:47,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:43:47" (1/1) ... [2019-11-24 04:43:47,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:43:47" (1/1) ... [2019-11-24 04:43:47,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:43:47" (1/1) ... [2019-11-24 04:43:47,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:43:47" (1/1) ... [2019-11-24 04:43:47,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:43:47" (1/1) ... [2019-11-24 04:43:48,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:43:48,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:43:48,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:43:48,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:43:48,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:43:47" (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 04:43:48,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:43:48,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 04:43:48,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:43:48,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:45:00,457 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:45:00,458 INFO L284 CfgBuilder]: Removed 1377 assume(true) statements. [2019-11-24 04:45:00,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:45:00 BoogieIcfgContainer [2019-11-24 04:45:00,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:45:00,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:45:00,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:45:00,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:45:00,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:43:46" (1/3) ... [2019-11-24 04:45:00,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6991bc78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:45:00, skipping insertion in model container [2019-11-24 04:45:00,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:43:47" (2/3) ... [2019-11-24 04:45:00,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6991bc78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:45:00, skipping insertion in model container [2019-11-24 04:45:00,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:45:00" (3/3) ... [2019-11-24 04:45:00,470 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product11.cil.c [2019-11-24 04:45:00,478 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:45:00,488 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-11-24 04:45:00,498 INFO L249 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-11-24 04:45:00,547 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:45:00,547 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:45:00,547 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:45:00,547 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:45:00,548 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:45:00,548 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:45:00,548 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:45:00,548 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:45:00,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1898 states. [2019-11-24 04:45:00,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-24 04:45:00,607 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:45:00,608 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:45:00,609 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:45:00,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:45:00,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1860334524, now seen corresponding path program 1 times [2019-11-24 04:45:00,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:45:00,628 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107006323] [2019-11-24 04:45:00,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:45:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:45:01,088 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 04:45:01,089 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107006323] [2019-11-24 04:45:01,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:45:01,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:45:01,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071081544] [2019-11-24 04:45:01,096 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:45:01,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:45:01,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:45:01,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:45:01,116 INFO L87 Difference]: Start difference. First operand 1898 states. Second operand 3 states. [2019-11-24 04:45:01,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:45:01,359 INFO L93 Difference]: Finished difference Result 3775 states and 7255 transitions. [2019-11-24 04:45:01,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:45:01,361 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-11-24 04:45:01,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:45:01,398 INFO L225 Difference]: With dead ends: 3775 [2019-11-24 04:45:01,399 INFO L226 Difference]: Without dead ends: 1887 [2019-11-24 04:45:01,411 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:45:01,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2019-11-24 04:45:01,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1887. [2019-11-24 04:45:01,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2019-11-24 04:45:01,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 3613 transitions. [2019-11-24 04:45:01,578 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 3613 transitions. Word has length 14 [2019-11-24 04:45:01,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:45:01,579 INFO L462 AbstractCegarLoop]: Abstraction has 1887 states and 3613 transitions. [2019-11-24 04:45:01,579 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:45:01,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 3613 transitions. [2019-11-24 04:45:01,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-24 04:45:01,583 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:45:01,583 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:45:01,588 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:45:01,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:45:01,588 INFO L82 PathProgramCache]: Analyzing trace with hash -216703777, now seen corresponding path program 1 times [2019-11-24 04:45:01,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:45:01,589 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744875896] [2019-11-24 04:45:01,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:45:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:45:01,759 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 04:45:01,759 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744875896] [2019-11-24 04:45:01,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:45:01,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:45:01,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861677302] [2019-11-24 04:45:01,762 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:45:01,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:45:01,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:45:01,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:45:01,763 INFO L87 Difference]: Start difference. First operand 1887 states and 3613 transitions. Second operand 4 states. [2019-11-24 04:45:03,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:45:03,925 INFO L93 Difference]: Finished difference Result 7120 states and 13580 transitions. [2019-11-24 04:45:03,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 04:45:03,925 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-24 04:45:03,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:45:03,954 INFO L225 Difference]: With dead ends: 7120 [2019-11-24 04:45:03,955 INFO L226 Difference]: Without dead ends: 5245 [2019-11-24 04:45:03,960 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 04:45:03,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5245 states. [2019-11-24 04:45:04,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5245 to 2505. [2019-11-24 04:45:04,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2505 states. [2019-11-24 04:45:04,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 4766 transitions. [2019-11-24 04:45:04,068 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 4766 transitions. Word has length 14 [2019-11-24 04:45:04,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:45:04,068 INFO L462 AbstractCegarLoop]: Abstraction has 2505 states and 4766 transitions. [2019-11-24 04:45:04,068 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:45:04,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 4766 transitions. [2019-11-24 04:45:04,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-24 04:45:04,070 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:45:04,070 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:45:04,070 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:45:04,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:45:04,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1847581107, now seen corresponding path program 1 times [2019-11-24 04:45:04,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:45:04,071 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061157089] [2019-11-24 04:45:04,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:45:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:45:04,148 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 04:45:04,149 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061157089] [2019-11-24 04:45:04,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:45:04,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:45:04,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684499672] [2019-11-24 04:45:04,150 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:45:04,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:45:04,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:45:04,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:45:04,151 INFO L87 Difference]: Start difference. First operand 2505 states and 4766 transitions. Second operand 3 states. [2019-11-24 04:45:04,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:45:04,368 INFO L93 Difference]: Finished difference Result 5005 states and 9526 transitions. [2019-11-24 04:45:04,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:45:04,368 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-11-24 04:45:04,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:45:04,384 INFO L225 Difference]: With dead ends: 5005 [2019-11-24 04:45:04,384 INFO L226 Difference]: Without dead ends: 2505 [2019-11-24 04:45:04,389 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:45:04,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2505 states. [2019-11-24 04:45:04,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2505 to 2505. [2019-11-24 04:45:04,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2505 states. [2019-11-24 04:45:04,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 4762 transitions. [2019-11-24 04:45:04,458 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 4762 transitions. Word has length 15 [2019-11-24 04:45:04,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:45:04,459 INFO L462 AbstractCegarLoop]: Abstraction has 2505 states and 4762 transitions. [2019-11-24 04:45:04,459 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:45:04,459 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 4762 transitions. [2019-11-24 04:45:04,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-24 04:45:04,460 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:45:04,460 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:45:04,461 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:45:04,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:45:04,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1467007691, now seen corresponding path program 1 times [2019-11-24 04:45:04,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:45:04,462 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994670406] [2019-11-24 04:45:04,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:45:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:45:04,624 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 04:45:04,625 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994670406] [2019-11-24 04:45:04,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:45:04,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-24 04:45:04,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629268619] [2019-11-24 04:45:04,626 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 04:45:04,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:45:04,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 04:45:04,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-24 04:45:04,627 INFO L87 Difference]: Start difference. First operand 2505 states and 4762 transitions. Second operand 6 states.