/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/array-industry-pattern/array_shadowinit.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:17:42,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:17:42,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:17:42,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 23:17:42,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 23:17:42,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 23:17:42,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 23:17:42,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 23:17:42,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 23:17:42,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 23:17:42,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 23:17:42,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 23:17:42,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 23:17:42,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 23:17:42,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 23:17:42,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 23:17:42,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 23:17:42,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 23:17:42,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 23:17:42,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 23:17:42,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 23:17:42,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 23:17:42,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 23:17:42,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 23:17:42,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 23:17:42,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 23:17:42,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 23:17:42,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 23:17:42,578 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 [2019-11-23 23:17:42,613 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:17:42,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:17:42,614 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:17:42,614 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:17:42,615 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:17:42,617 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:17:42,617 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:17:42,617 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:17:42,617 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:17:42,618 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:17:42,618 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:17:42,618 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:17:42,618 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:17:42,618 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:17:42,619 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:17:42,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:17:42,620 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:17:42,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:17:42,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:17:42,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:17:42,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:17:42,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:17:42,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:17:42,622 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:17:42,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:17:42,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:17:42,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:17:42,623 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:17:42,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:17:42,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:17:42,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:17:42,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:17:42,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:17:42,624 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:17:42,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:17:42,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:17:42,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:17:42,625 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:17:42,909 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:17:42,927 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:17:42,931 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:17:42,933 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:17:42,933 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:17:42,934 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_shadowinit.i [2019-11-23 23:17:43,004 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bc880d49/ef77ee85006a40d19b7fc54b04f618b5/FLAG174b998db [2019-11-23 23:17:43,468 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:17:43,469 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_shadowinit.i [2019-11-23 23:17:43,475 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bc880d49/ef77ee85006a40d19b7fc54b04f618b5/FLAG174b998db [2019-11-23 23:17:43,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bc880d49/ef77ee85006a40d19b7fc54b04f618b5 [2019-11-23 23:17:43,880 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:17:43,882 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:17:43,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:17:43,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:17:43,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:17:43,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:17:43" (1/1) ... [2019-11-23 23:17:43,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2db4663a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:43, skipping insertion in model container [2019-11-23 23:17:43,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:17:43" (1/1) ... [2019-11-23 23:17:43,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:17:43,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:17:44,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:17:44,122 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:17:44,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:17:44,162 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:17:44,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:44 WrapperNode [2019-11-23 23:17:44,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:17:44,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:17:44,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:17:44,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:17:44,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:44" (1/1) ... [2019-11-23 23:17:44,266 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:44" (1/1) ... [2019-11-23 23:17:44,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:17:44,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:17:44,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:17:44,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:17:44,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:44" (1/1) ... [2019-11-23 23:17:44,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:44" (1/1) ... [2019-11-23 23:17:44,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:44" (1/1) ... [2019-11-23 23:17:44,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:44" (1/1) ... [2019-11-23 23:17:44,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:44" (1/1) ... [2019-11-23 23:17:44,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:44" (1/1) ... [2019-11-23 23:17:44,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:44" (1/1) ... [2019-11-23 23:17:44,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:17:44,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:17:44,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:17:44,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:17:44,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:44" (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 [2019-11-23 23:17:44,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 23:17:44,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:17:44,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:17:44,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 23:17:44,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 23:17:44,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 23:17:44,713 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:17:44,713 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-23 23:17:44,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:17:44 BoogieIcfgContainer [2019-11-23 23:17:44,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:17:44,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:17:44,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:17:44,719 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:17:44,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:17:43" (1/3) ... [2019-11-23 23:17:44,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232250f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:17:44, skipping insertion in model container [2019-11-23 23:17:44,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:17:44" (2/3) ... [2019-11-23 23:17:44,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232250f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:17:44, skipping insertion in model container [2019-11-23 23:17:44,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:17:44" (3/3) ... [2019-11-23 23:17:44,727 INFO L109 eAbstractionObserver]: Analyzing ICFG array_shadowinit.i [2019-11-23 23:17:44,739 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:17:44,745 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:17:44,762 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:17:44,783 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:17:44,783 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:17:44,784 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:17:44,784 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:17:44,784 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:17:44,784 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:17:44,784 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:17:44,784 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:17:44,795 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-11-23 23:17:44,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-23 23:17:44,800 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:17:44,801 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-23 23:17:44,801 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:17:44,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:17:44,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1998411779, now seen corresponding path program 1 times [2019-11-23 23:17:44,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:17:44,815 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496543577] [2019-11-23 23:17:44,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:17:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:17:44,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 23:17:44,970 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496543577] [2019-11-23 23:17:44,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:17:44,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 23:17:44,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11721434] [2019-11-23 23:17:44,975 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:17:44,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:17:44,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:17:44,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:17:44,988 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2019-11-23 23:17:45,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:17:45,041 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2019-11-23 23:17:45,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:17:45,043 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-23 23:17:45,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:17:45,052 INFO L225 Difference]: With dead ends: 18 [2019-11-23 23:17:45,053 INFO L226 Difference]: Without dead ends: 9 [2019-11-23 23:17:45,055 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 [2019-11-23 23:17:45,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-23 23:17:45,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-23 23:17:45,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-23 23:17:45,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2019-11-23 23:17:45,083 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2019-11-23 23:17:45,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:17:45,083 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-11-23 23:17:45,083 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:17:45,084 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2019-11-23 23:17:45,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-23 23:17:45,084 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:17:45,084 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:17:45,084 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:17:45,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:17:45,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1856468671, now seen corresponding path program 1 times [2019-11-23 23:17:45,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:17:45,085 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57841025] [2019-11-23 23:17:45,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:17:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:17:45,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 23:17:45,298 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57841025] [2019-11-23 23:17:45,298 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964237946] [2019-11-23 23:17:45,298 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 [2019-11-23 23:17:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:17:45,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-23 23:17:45,360 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:17:45,434 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-23 23:17:45,435 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 23:17:45,445 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 23:17:45,445 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 23:17:45,446 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2019-11-23 23:17:45,470 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:17:45,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 23:17:45,492 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:17:45,542 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2019-11-23 23:17:45,550 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2019-11-23 23:17:45,552 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2019-11-23 23:17:45,558 INFO L567 ElimStorePlain]: treesize reduction 8, result has 27.3 percent of original size [2019-11-23 23:17:45,558 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-23 23:17:45,561 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 23:17:45,561 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 23:17:45,562 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:14, output treesize:3 [2019-11-23 23:17:45,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 23:17:45,575 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [975253768] [2019-11-23 23:17:45,599 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-11-23 23:17:45,599 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 23:17:45,607 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 23:17:45,616 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 23:17:45,617 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 23:18:21,949 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 316 DAG size of output: 316 [2019-11-23 23:18:23,703 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 328 DAG size of output: 323 [2019-11-23 23:18:27,520 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 338 DAG size of output: 335 [2019-11-23 23:18:39,863 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 384 DAG size of output: 377 [2019-11-23 23:18:58,216 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 410 DAG size of output: 407 [2019-11-23 23:18:58,437 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 410 DAG size of output: 409 [2019-11-23 23:19:04,487 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 430 DAG size of output: 429 [2019-11-23 23:19:04,608 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 430 DAG size of output: 423 [2019-11-23 23:19:07,405 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 428 DAG size of output: 427 [2019-11-23 23:19:10,205 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 437 DAG size of output: 431