/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-tiling/pnr5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:25:44,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:25:44,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:25:44,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 23:25:44,440 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 23:25:44,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 23:25:44,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 23:25:44,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 23:25:44,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 23:25:44,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 23:25:44,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 23:25:44,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 23:25:44,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 23:25:44,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 23:25:44,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 23:25:44,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 23:25:44,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 23:25:44,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 23:25:44,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 23:25:44,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 23:25:44,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 23:25:44,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 23:25:44,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 23:25:44,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 23:25:44,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 23:25:44,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 23:25:44,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 23:25:44,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 23:25:44,493 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 23:25:44,508 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:25:44,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:25:44,509 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:25:44,509 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:25:44,510 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:25:44,510 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:25:44,510 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:25:44,510 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:25:44,510 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:25:44,510 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:25:44,511 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:25:44,511 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:25:44,511 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:25:44,511 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:25:44,511 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:25:44,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:25:44,512 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:25:44,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:25:44,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:25:44,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:25:44,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:25:44,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:25:44,514 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:25:44,514 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:25:44,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:25:44,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:25:44,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:25:44,515 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:25:44,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:25:44,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:25:44,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:25:44,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:25:44,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:25:44,516 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:25:44,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:25:44,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:25:44,516 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:25:44,517 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:25:44,803 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:25:44,824 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:25:44,827 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:25:44,829 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:25:44,829 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:25:44,830 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/pnr5.c [2019-11-23 23:25:44,899 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3358f41b4/45a99d5afec4440f9ee9c1d7de834fd6/FLAG2ef44cfe2 [2019-11-23 23:25:45,354 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:25:45,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/pnr5.c [2019-11-23 23:25:45,362 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3358f41b4/45a99d5afec4440f9ee9c1d7de834fd6/FLAG2ef44cfe2 [2019-11-23 23:25:45,734 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3358f41b4/45a99d5afec4440f9ee9c1d7de834fd6 [2019-11-23 23:25:45,745 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:25:45,747 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:25:45,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:25:45,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:25:45,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:25:45,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:25:45" (1/1) ... [2019-11-23 23:25:45,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ceb8032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:45, skipping insertion in model container [2019-11-23 23:25:45,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:25:45" (1/1) ... [2019-11-23 23:25:45,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:25:45,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:25:45,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:25:46,009 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:25:46,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:25:46,050 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:25:46,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:46 WrapperNode [2019-11-23 23:25:46,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:25:46,052 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:25:46,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:25:46,052 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:25:46,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:46" (1/1) ... [2019-11-23 23:25:46,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:46" (1/1) ... [2019-11-23 23:25:46,193 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:25:46,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:25:46,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:25:46,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:25:46,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:46" (1/1) ... [2019-11-23 23:25:46,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:46" (1/1) ... [2019-11-23 23:25:46,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:46" (1/1) ... [2019-11-23 23:25:46,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:46" (1/1) ... [2019-11-23 23:25:46,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:46" (1/1) ... [2019-11-23 23:25:46,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:46" (1/1) ... [2019-11-23 23:25:46,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:46" (1/1) ... [2019-11-23 23:25:46,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:25:46,222 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:25:46,222 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:25:46,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:25:46,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:46" (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 23:25:46,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 23:25:46,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-23 23:25:46,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:25:46,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:25:46,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 23:25:46,997 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:25:46,997 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-23 23:25:46,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:25:46 BoogieIcfgContainer [2019-11-23 23:25:46,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:25:46,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:25:47,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:25:47,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:25:47,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:25:45" (1/3) ... [2019-11-23 23:25:47,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7298ac2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:25:47, skipping insertion in model container [2019-11-23 23:25:47,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:46" (2/3) ... [2019-11-23 23:25:47,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7298ac2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:25:47, skipping insertion in model container [2019-11-23 23:25:47,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:25:46" (3/3) ... [2019-11-23 23:25:47,006 INFO L109 eAbstractionObserver]: Analyzing ICFG pnr5.c [2019-11-23 23:25:47,014 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:25:47,021 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:25:47,031 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:25:47,053 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:25:47,053 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:25:47,054 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:25:47,054 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:25:47,054 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:25:47,054 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:25:47,055 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:25:47,055 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:25:47,069 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-23 23:25:47,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-23 23:25:47,076 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:25:47,077 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:25:47,077 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:25:47,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:25:47,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1320201058, now seen corresponding path program 1 times [2019-11-23 23:25:47,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:25:47,092 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470694069] [2019-11-23 23:25:47,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:25:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:25:47,356 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 23:25:47,357 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470694069] [2019-11-23 23:25:47,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:25:47,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 23:25:47,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349037555] [2019-11-23 23:25:47,364 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 23:25:47,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:25:47,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 23:25:47,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 23:25:47,387 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2019-11-23 23:25:47,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:25:47,485 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2019-11-23 23:25:47,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 23:25:47,489 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-23 23:25:47,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:25:47,504 INFO L225 Difference]: With dead ends: 24 [2019-11-23 23:25:47,504 INFO L226 Difference]: Without dead ends: 10 [2019-11-23 23:25:47,509 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 23:25:47,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-23 23:25:47,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-23 23:25:47,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-23 23:25:47,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-11-23 23:25:47,554 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2019-11-23 23:25:47,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:25:47,554 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-23 23:25:47,555 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 23:25:47,555 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-11-23 23:25:47,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 23:25:47,556 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:25:47,556 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:25:47,556 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:25:47,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:25:47,557 INFO L82 PathProgramCache]: Analyzing trace with hash 2030229645, now seen corresponding path program 1 times [2019-11-23 23:25:47,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:25:47,558 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443562506] [2019-11-23 23:25:47,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:25:47,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:25:48,149 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 23:25:48,153 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443562506] [2019-11-23 23:25:48,153 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086742780] [2019-11-23 23:25:48,153 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 23:25:48,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:25:48,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-23 23:25:48,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:25:48,293 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:48,294 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:48,296 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:48,298 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:48,300 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:48,307 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:48,317 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:48,320 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:48,331 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:48,342 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:48,343 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:48,344 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:48,346 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:48,350 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:48,351 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:48,354 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:48,365 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:48,367 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:48,368 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:48,369 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:48,373 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:48,378 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:48,379 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:48,382 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:48,388 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:48,389 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:48,390 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:48,392 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:48,395 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:48,396 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:48,398 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 23:25:53,291 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 23:25:54,437 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 23:25:55,253 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 23:25:57,005 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 23:25:58,205 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 23:25:59,861 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 23:26:01,232 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 23:26:03,263 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ ULTIMATE.start_main_~a~0.offset 12) (+ ULTIMATE.start_main_~a~0.offset 8)) [2019-11-23 23:26:03,264 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 23:26:04,414 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 23:26:06,049 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 23:26:25,893 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= ULTIMATE.start_main_~value~0 ULTIMATE.start_main_~FIXEDVAL~0) [2019-11-23 23:26:30,689 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= ULTIMATE.start_main_~value~0 v_prenex_86) [2019-11-23 23:26:35,318 INFO L237 Elim1Store]: Index analysis took 42962 ms [2019-11-23 23:26:38,499 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |#memory_int| ULTIMATE.start_main_~a~0.base) (+ ULTIMATE.start_main_~a~0.offset 4)) ULTIMATE.start_main_~FIXEDVAL~0) [2019-11-23 23:26:47,900 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= ULTIMATE.start_main_~value~0 (select (select |#memory_int| ULTIMATE.start_main_~a~0.base) (+ ULTIMATE.start_main_~a~0.offset 4))) [2019-11-23 23:26:51,321 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |#memory_int| ULTIMATE.start_main_~a~0.base) ULTIMATE.start_main_~a~0.offset) v_prenex_84) [2019-11-23 23:27:20,206 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 14 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 66 [2019-11-23 23:27:20,207 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.