/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-examples/standard_copyInit_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:07:44,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:07:44,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:07:44,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 23:07:44,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 23:07:44,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 23:07:44,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 23:07:44,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 23:07:44,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 23:07:44,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 23:07:44,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 23:07:44,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 23:07:44,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 23:07:44,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 23:07:44,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 23:07:44,705 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 23:07:44,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 23:07:44,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 23:07:44,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 23:07:44,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 23:07:44,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 23:07:44,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 23:07:44,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 23:07:44,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 23:07:44,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 23:07:44,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 23:07:44,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 23:07:44,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 23:07:44,727 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 23:07:44,742 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:07:44,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:07:44,743 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:07:44,743 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:07:44,744 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:07:44,744 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:07:44,744 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:07:44,744 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:07:44,744 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:07:44,744 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:07:44,745 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:07:44,745 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:07:44,745 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:07:44,745 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:07:44,745 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:07:44,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:07:44,746 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:07:44,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:07:44,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:07:44,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:07:44,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:07:44,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:07:44,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:07:44,748 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:07:44,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:07:44,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:07:44,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:07:44,749 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:07:44,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:07:44,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:07:44,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:07:44,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:07:44,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:07:44,750 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:07:44,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:07:44,750 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:07:44,750 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:07:44,751 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:07:45,017 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:07:45,037 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:07:45,040 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:07:45,042 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:07:45,042 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:07:45,043 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copyInit_ground.i [2019-11-23 23:07:45,114 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7422bba5c/ca3a39c510bc448690f81c6f9474fbc6/FLAGddcc09d85 [2019-11-23 23:07:45,563 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:07:45,564 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copyInit_ground.i [2019-11-23 23:07:45,569 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7422bba5c/ca3a39c510bc448690f81c6f9474fbc6/FLAGddcc09d85 [2019-11-23 23:07:45,954 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7422bba5c/ca3a39c510bc448690f81c6f9474fbc6 [2019-11-23 23:07:45,962 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:07:45,963 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:07:45,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:07:45,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:07:45,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:07:45,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:07:45" (1/1) ... [2019-11-23 23:07:45,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bf32611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:45, skipping insertion in model container [2019-11-23 23:07:45,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:07:45" (1/1) ... [2019-11-23 23:07:45,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:07:45,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:07:46,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:07:46,196 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:07:46,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:07:46,230 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:07:46,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:46 WrapperNode [2019-11-23 23:07:46,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:07:46,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:07:46,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:07:46,232 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:07:46,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:46" (1/1) ... [2019-11-23 23:07:46,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:46" (1/1) ... [2019-11-23 23:07:46,353 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:07:46,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:07:46,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:07:46,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:07:46,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:46" (1/1) ... [2019-11-23 23:07:46,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:46" (1/1) ... [2019-11-23 23:07:46,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:46" (1/1) ... [2019-11-23 23:07:46,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:46" (1/1) ... [2019-11-23 23:07:46,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:46" (1/1) ... [2019-11-23 23:07:46,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:46" (1/1) ... [2019-11-23 23:07:46,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:46" (1/1) ... [2019-11-23 23:07:46,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:07:46,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:07:46,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:07:46,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:07:46,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:46" (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 23:07:46,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 23:07:46,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:07:46,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:07:46,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 23:07:46,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 23:07:46,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 23:07:46,732 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:07:46,733 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-23 23:07:46,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:07:46 BoogieIcfgContainer [2019-11-23 23:07:46,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:07:46,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:07:46,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:07:46,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:07:46,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:07:45" (1/3) ... [2019-11-23 23:07:46,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c43913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:07:46, skipping insertion in model container [2019-11-23 23:07:46,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:07:46" (2/3) ... [2019-11-23 23:07:46,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c43913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:07:46, skipping insertion in model container [2019-11-23 23:07:46,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:07:46" (3/3) ... [2019-11-23 23:07:46,745 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copyInit_ground.i [2019-11-23 23:07:46,756 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:07:46,763 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:07:46,777 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:07:46,810 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:07:46,810 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:07:46,810 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:07:46,810 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:07:46,810 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:07:46,810 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:07:46,811 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:07:46,811 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:07:46,835 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-23 23:07:46,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-23 23:07:46,847 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:07:46,853 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-23 23:07:46,854 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:07:46,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:07:46,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1715387349, now seen corresponding path program 1 times [2019-11-23 23:07:46,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:07:46,868 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753600495] [2019-11-23 23:07:46,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:07:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:07:47,018 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 23:07:47,019 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753600495] [2019-11-23 23:07:47,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:07:47,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 23:07:47,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010447664] [2019-11-23 23:07:47,026 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:07:47,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:07:47,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:07:47,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:07:47,043 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-11-23 23:07:47,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:07:47,085 INFO L93 Difference]: Finished difference Result 18 states and 25 transitions. [2019-11-23 23:07:47,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:07:47,090 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-23 23:07:47,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:07:47,100 INFO L225 Difference]: With dead ends: 18 [2019-11-23 23:07:47,100 INFO L226 Difference]: Without dead ends: 10 [2019-11-23 23:07:47,103 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 23:07:47,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-23 23:07:47,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-23 23:07:47,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-23 23:07:47,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2019-11-23 23:07:47,138 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 6 [2019-11-23 23:07:47,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:07:47,139 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-23 23:07:47,139 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:07:47,139 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2019-11-23 23:07:47,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 23:07:47,140 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:07:47,140 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:07:47,140 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:07:47,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:07:47,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1783096853, now seen corresponding path program 1 times [2019-11-23 23:07:47,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:07:47,142 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348204793] [2019-11-23 23:07:47,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:07:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:07:47,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 23:07:47,207 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348204793] [2019-11-23 23:07:47,208 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367036949] [2019-11-23 23:07:47,208 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 23:07:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:07:47,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 23:07:47,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:07:47,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 23:07:47,300 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:07:47,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 23:07:47,321 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1827391873] [2019-11-23 23:07:47,343 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-11-23 23:07:47,343 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 23:07:47,349 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 23:07:47,357 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 23:07:47,358 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 23:07:55,953 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 177 [2019-11-23 23:08:17,658 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 257 [2019-11-23 23:08:35,205 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 302 DAG size of output: 299 [2019-11-23 23:08:37,386 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 304 DAG size of output: 300 [2019-11-23 23:08:39,630 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 310 DAG size of output: 305 [2019-11-23 23:08:44,100 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 312 [2019-11-23 23:08:48,487 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 323 DAG size of output: 318 [2019-11-23 23:08:51,125 WARN L192 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 328 [2019-11-23 23:08:51,381 WARN L192 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 325 [2019-11-23 23:08:53,695 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2019-11-23 23:08:53,809 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 328 [2019-11-23 23:08:56,546 WARN L192 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 332 [2019-11-23 23:08:56,790 WARN L192 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 332 [2019-11-23 23:08:59,147 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 339 DAG size of output: 338 [2019-11-23 23:08:59,296 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 339 DAG size of output: 335 [2019-11-23 23:08:59,430 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2019-11-23 23:08:59,553 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 338 DAG size of output: 335 [2019-11-23 23:08:59,789 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 337 DAG size of output: 337 [2019-11-23 23:09:02,363 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 342 DAG size of output: 341 [2019-11-23 23:09:04,888 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 344 [2019-11-23 23:09:05,011 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 345 [2019-11-23 23:09:07,628 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 349 [2019-11-23 23:09:07,761 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 350 DAG size of output: 347 [2019-11-23 23:09:07,897 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 348 [2019-11-23 23:09:08,007 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 349 DAG size of output: 348 [2019-11-23 23:09:08,234 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 352 DAG size of output: 352 [2019-11-23 23:09:10,797 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 370 DAG size of output: 369 [2019-11-23 23:09:10,933 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 370 DAG size of output: 367 [2019-11-23 23:09:13,938 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2019-11-23 23:09:14,068 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 371 DAG size of output: 371 [2019-11-23 23:09:16,827 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 375 [2019-11-23 23:09:16,962 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 376 DAG size of output: 376