/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/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-crafted/mapsum5.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 20:13:30,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 20:13:30,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 20:13:30,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 20:13:30,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 20:13:30,136 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 20:13:30,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 20:13:30,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 20:13:30,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 20:13:30,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 20:13:30,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 20:13:30,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 20:13:30,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 20:13:30,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 20:13:30,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 20:13:30,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 20:13:30,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 20:13:30,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 20:13:30,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 20:13:30,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 20:13:30,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 20:13:30,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 20:13:30,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 20:13:30,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 20:13:30,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 20:13:30,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 20:13:30,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 20:13:30,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 20:13:30,170 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-23 20:13:30,193 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 20:13:30,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 20:13:30,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 20:13:30,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 20:13:30,195 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 20:13:30,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 20:13:30,195 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 20:13:30,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 20:13:30,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 20:13:30,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 20:13:30,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 20:13:30,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 20:13:30,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 20:13:30,196 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 20:13:30,197 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 20:13:30,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 20:13:30,197 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 20:13:30,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 20:13:30,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 20:13:30,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 20:13:30,198 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 20:13:30,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 20:13:30,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 20:13:30,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 20:13:30,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 20:13:30,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 20:13:30,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 20:13:30,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 20:13:30,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 20:13:30,200 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 20:13:30,528 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 20:13:30,554 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 20:13:30,557 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 20:13:30,559 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 20:13:30,559 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 20:13:30,560 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapsum5.i [2019-11-23 20:13:30,641 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58c4603c5/0505d04d1b494729a6d36ffd854e80cb/FLAG94165c395 [2019-11-23 20:13:31,016 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 20:13:31,016 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/mapsum5.i [2019-11-23 20:13:31,023 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58c4603c5/0505d04d1b494729a6d36ffd854e80cb/FLAG94165c395 [2019-11-23 20:13:31,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58c4603c5/0505d04d1b494729a6d36ffd854e80cb [2019-11-23 20:13:31,448 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 20:13:31,450 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 20:13:31,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 20:13:31,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 20:13:31,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 20:13:31,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:13:31" (1/1) ... [2019-11-23 20:13:31,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@517c1755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:13:31, skipping insertion in model container [2019-11-23 20:13:31,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:13:31" (1/1) ... [2019-11-23 20:13:31,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 20:13:31,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 20:13:31,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 20:13:31,750 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 20:13:31,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 20:13:31,801 INFO L208 MainTranslator]: Completed translation [2019-11-23 20:13:31,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:13:31 WrapperNode [2019-11-23 20:13:31,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 20:13:31,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 20:13:31,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 20:13:31,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 20:13:31,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:13:31" (1/1) ... [2019-11-23 20:13:31,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:13:31" (1/1) ... [2019-11-23 20:13:31,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 20:13:31,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 20:13:31,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 20:13:31,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 20:13:31,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:13:31" (1/1) ... [2019-11-23 20:13:31,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:13:31" (1/1) ... [2019-11-23 20:13:31,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:13:31" (1/1) ... [2019-11-23 20:13:31,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:13:31" (1/1) ... [2019-11-23 20:13:31,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:13:31" (1/1) ... [2019-11-23 20:13:31,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:13:31" (1/1) ... [2019-11-23 20:13:31,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:13:31" (1/1) ... [2019-11-23 20:13:31,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 20:13:31,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 20:13:31,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 20:13:31,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 20:13:31,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:13:31" (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 20:13:32,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 20:13:32,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 20:13:32,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 20:13:32,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 20:13:32,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 20:13:32,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 20:13:32,373 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 20:13:32,374 INFO L284 CfgBuilder]: Removed 15 assume(true) statements. [2019-11-23 20:13:32,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:13:32 BoogieIcfgContainer [2019-11-23 20:13:32,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 20:13:32,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 20:13:32,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 20:13:32,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 20:13:32,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:13:31" (1/3) ... [2019-11-23 20:13:32,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7553f56d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:13:32, skipping insertion in model container [2019-11-23 20:13:32,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:13:31" (2/3) ... [2019-11-23 20:13:32,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7553f56d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:13:32, skipping insertion in model container [2019-11-23 20:13:32,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:13:32" (3/3) ... [2019-11-23 20:13:32,382 INFO L109 eAbstractionObserver]: Analyzing ICFG mapsum5.i [2019-11-23 20:13:32,397 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 20:13:32,403 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 20:13:32,413 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 20:13:32,436 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 20:13:32,436 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 20:13:32,437 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 20:13:32,437 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 20:13:32,437 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 20:13:32,437 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 20:13:32,437 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 20:13:32,437 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 20:13:32,452 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-11-23 20:13:32,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-23 20:13:32,459 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:13:32,460 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:13:32,460 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:13:32,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:13:32,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1563818866, now seen corresponding path program 1 times [2019-11-23 20:13:32,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:13:32,477 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591315566] [2019-11-23 20:13:32,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:13:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:13:32,611 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 20:13:32,612 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591315566] [2019-11-23 20:13:32,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:13:32,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 20:13:32,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613471380] [2019-11-23 20:13:32,618 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-23 20:13:32,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:13:32,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-23 20:13:32,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-23 20:13:32,631 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2019-11-23 20:13:32,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:13:32,648 INFO L93 Difference]: Finished difference Result 53 states and 72 transitions. [2019-11-23 20:13:32,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-23 20:13:32,649 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-11-23 20:13:32,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:13:32,657 INFO L225 Difference]: With dead ends: 53 [2019-11-23 20:13:32,657 INFO L226 Difference]: Without dead ends: 24 [2019-11-23 20:13:32,660 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-23 20:13:32,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-23 20:13:32,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-23 20:13:32,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-23 20:13:32,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-11-23 20:13:32,695 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 18 [2019-11-23 20:13:32,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:13:32,696 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-23 20:13:32,696 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-23 20:13:32,696 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-11-23 20:13:32,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-23 20:13:32,697 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:13:32,697 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:13:32,697 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:13:32,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:13:32,698 INFO L82 PathProgramCache]: Analyzing trace with hash -2019195128, now seen corresponding path program 1 times [2019-11-23 20:13:32,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:13:32,699 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566420580] [2019-11-23 20:13:32,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:13:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:13:32,829 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 20:13:32,829 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566420580] [2019-11-23 20:13:32,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:13:32,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 20:13:32,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745886004] [2019-11-23 20:13:32,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 20:13:32,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:13:32,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 20:13:32,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 20:13:32,836 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 3 states. [2019-11-23 20:13:32,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:13:32,913 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2019-11-23 20:13:32,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 20:13:32,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-11-23 20:13:32,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:13:32,916 INFO L225 Difference]: With dead ends: 45 [2019-11-23 20:13:32,917 INFO L226 Difference]: Without dead ends: 26 [2019-11-23 20:13:32,918 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 20:13:32,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-23 20:13:32,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2019-11-23 20:13:32,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-23 20:13:32,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2019-11-23 20:13:32,925 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 18 [2019-11-23 20:13:32,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:13:32,925 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2019-11-23 20:13:32,925 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 20:13:32,926 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-11-23 20:13:32,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-23 20:13:32,926 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:13:32,927 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:13:32,927 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:13:32,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:13:32,927 INFO L82 PathProgramCache]: Analyzing trace with hash 2143387046, now seen corresponding path program 1 times [2019-11-23 20:13:32,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:13:32,928 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138430336] [2019-11-23 20:13:32,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:13:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:13:33,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 20:13:33,028 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138430336] [2019-11-23 20:13:33,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:13:33,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 20:13:33,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347365045] [2019-11-23 20:13:33,031 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 20:13:33,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:13:33,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 20:13:33,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 20:13:33,033 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 4 states. [2019-11-23 20:13:33,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:13:33,108 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2019-11-23 20:13:33,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 20:13:33,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2019-11-23 20:13:33,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:13:33,109 INFO L225 Difference]: With dead ends: 47 [2019-11-23 20:13:33,110 INFO L226 Difference]: Without dead ends: 31 [2019-11-23 20:13:33,110 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 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 20:13:33,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-23 20:13:33,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2019-11-23 20:13:33,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-23 20:13:33,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-11-23 20:13:33,117 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 20 [2019-11-23 20:13:33,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:13:33,117 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-11-23 20:13:33,117 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 20:13:33,117 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-11-23 20:13:33,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-23 20:13:33,118 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:13:33,118 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:13:33,119 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:13:33,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:13:33,119 INFO L82 PathProgramCache]: Analyzing trace with hash 46775620, now seen corresponding path program 1 times [2019-11-23 20:13:33,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:13:33,120 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179973308] [2019-11-23 20:13:33,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:13:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:13:33,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-23 20:13:33,218 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179973308] [2019-11-23 20:13:33,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:13:33,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 20:13:33,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358005400] [2019-11-23 20:13:33,219 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 20:13:33,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:13:33,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 20:13:33,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 20:13:33,221 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2019-11-23 20:13:33,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:13:33,293 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2019-11-23 20:13:33,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 20:13:33,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2019-11-23 20:13:33,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:13:33,298 INFO L225 Difference]: With dead ends: 39 [2019-11-23 20:13:33,298 INFO L226 Difference]: Without dead ends: 30 [2019-11-23 20:13:33,299 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 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 20:13:33,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-23 20:13:33,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2019-11-23 20:13:33,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-23 20:13:33,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-11-23 20:13:33,309 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 26 [2019-11-23 20:13:33,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:13:33,309 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-11-23 20:13:33,309 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 20:13:33,310 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-11-23 20:13:33,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-23 20:13:33,310 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:13:33,312 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:13:33,313 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:13:33,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:13:33,313 INFO L82 PathProgramCache]: Analyzing trace with hash -548779230, now seen corresponding path program 1 times [2019-11-23 20:13:33,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:13:33,314 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627890543] [2019-11-23 20:13:33,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:13:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:13:33,435 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-23 20:13:33,436 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627890543] [2019-11-23 20:13:33,436 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490542681] [2019-11-23 20:13:33,436 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 20:13:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:13:33,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-23 20:13:33,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:13:33,598 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-23 20:13:33,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:13:33,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2019-11-23 20:13:33,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583685468] [2019-11-23 20:13:33,602 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 20:13:33,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:13:33,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 20:13:33,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-23 20:13:33,604 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2019-11-23 20:13:33,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:13:33,681 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2019-11-23 20:13:33,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 20:13:33,683 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2019-11-23 20:13:33,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:13:33,684 INFO L225 Difference]: With dead ends: 55 [2019-11-23 20:13:33,684 INFO L226 Difference]: Without dead ends: 32 [2019-11-23 20:13:33,685 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-23 20:13:33,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-23 20:13:33,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2019-11-23 20:13:33,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-23 20:13:33,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-11-23 20:13:33,692 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 28 [2019-11-23 20:13:33,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:13:33,692 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-11-23 20:13:33,693 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 20:13:33,693 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2019-11-23 20:13:33,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-23 20:13:33,694 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:13:33,694 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:13:33,898 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:13:33,899 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:13:33,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:13:33,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1519457344, now seen corresponding path program 2 times [2019-11-23 20:13:33,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:13:33,900 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472021410] [2019-11-23 20:13:33,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:13:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:13:34,019 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-23 20:13:34,019 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472021410] [2019-11-23 20:13:34,020 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694907028] [2019-11-23 20:13:34,021 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:13:34,073 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 20:13:34,073 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:13:34,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-23 20:13:34,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:13:34,111 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-23 20:13:34,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:13:34,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-11-23 20:13:34,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278547178] [2019-11-23 20:13:34,113 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-23 20:13:34,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:13:34,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-23 20:13:34,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2019-11-23 20:13:34,114 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2019-11-23 20:13:34,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:13:34,227 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2019-11-23 20:13:34,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-23 20:13:34,229 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2019-11-23 20:13:34,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:13:34,229 INFO L225 Difference]: With dead ends: 59 [2019-11-23 20:13:34,230 INFO L226 Difference]: Without dead ends: 40 [2019-11-23 20:13:34,230 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-11-23 20:13:34,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-23 20:13:34,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2019-11-23 20:13:34,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-23 20:13:34,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2019-11-23 20:13:34,241 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 30 [2019-11-23 20:13:34,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:13:34,241 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2019-11-23 20:13:34,242 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-23 20:13:34,245 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2019-11-23 20:13:34,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-23 20:13:34,246 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:13:34,246 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:13:34,447 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:13:34,447 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:13:34,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:13:34,448 INFO L82 PathProgramCache]: Analyzing trace with hash 509646686, now seen corresponding path program 3 times [2019-11-23 20:13:34,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:13:34,448 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769219123] [2019-11-23 20:13:34,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:13:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:13:35,743 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2019-11-23 20:13:36,299 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 38 [2019-11-23 20:13:36,499 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 25 [2019-11-23 20:13:36,707 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2019-11-23 20:13:37,009 WARN L192 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 68 [2019-11-23 20:13:37,378 WARN L192 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 81 [2019-11-23 20:13:37,731 WARN L192 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 74 [2019-11-23 20:13:38,098 WARN L192 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 64 [2019-11-23 20:13:38,359 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2019-11-23 20:13:38,601 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2019-11-23 20:13:38,891 WARN L192 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2019-11-23 20:13:39,144 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-11-23 20:13:39,373 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-11-23 20:13:39,590 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-11-23 20:13:39,804 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2019-11-23 20:13:40,010 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 46 [2019-11-23 20:13:40,220 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2019-11-23 20:13:40,358 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:13:40,358 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769219123] [2019-11-23 20:13:40,358 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374645548] [2019-11-23 20:13:40,359 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:13:40,658 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-23 20:13:40,658 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:13:40,660 WARN L253 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 97 conjunts are in the unsatisfiable core [2019-11-23 20:13:40,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:13:40,755 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 15 treesize of output 11 [2019-11-23 20:13:40,756 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:13:40,769 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:13:40,771 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 20:13:40,772 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:34 [2019-11-23 20:13:40,928 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:13:40,929 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 51 [2019-11-23 20:13:40,930 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:13:40,933 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:13:40,972 INFO L567 ElimStorePlain]: treesize reduction 25, result has 64.3 percent of original size [2019-11-23 20:13:40,973 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 20:13:40,974 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:49, output treesize:50 [2019-11-23 20:13:41,947 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:13:42,244 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:13:42,260 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:13:42,261 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:13:42,262 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:13:42,263 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:13:42,265 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:13:42,272 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 85 [2019-11-23 20:13:42,275 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:13:42,292 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:13:42,293 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:13:42,294 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:13:42,296 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 87 [2019-11-23 20:13:42,298 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 20:13:42,433 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2019-11-23 20:13:42,434 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:13:42,437 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2019-11-23 20:13:42,438 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:285, output treesize:228 [2019-11-23 20:13:42,755 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2019-11-23 20:13:43,517 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:13:43,517 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:13:43,520 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:13:44,107 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 66 [2019-11-23 20:13:44,555 WARN L192 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2019-11-23 20:13:44,559 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:13:44,577 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:13:44,579 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:13:44,581 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 88 [2019-11-23 20:13:44,582 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:13:44,718 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2019-11-23 20:13:44,718 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:13:44,730 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:13:44,731 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:13:44,733 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 76 [2019-11-23 20:13:44,734 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 20:13:44,865 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-11-23 20:13:44,865 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:13:44,867 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2019-11-23 20:13:44,868 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:287, output treesize:233 [2019-11-23 20:13:45,159 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:13:45,195 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:13:45,196 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:13:45,211 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 94 [2019-11-23 20:13:45,213 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:13:45,220 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:13:45,221 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:13:45,222 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:13:45,227 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 82 [2019-11-23 20:13:45,228 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 20:13:45,368 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2019-11-23 20:13:45,368 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:13:45,371 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2019-11-23 20:13:45,371 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:277, output treesize:255 [2019-11-23 20:13:46,284 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:13:46,285 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:13:46,287 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:13:46,287 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:13:46,291 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:13:46,291 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 129 treesize of output 71 [2019-11-23 20:13:46,294 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:13:46,392 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:13:46,401 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:13:46,402 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:13:46,403 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:13:46,404 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:13:46,411 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:13:46,412 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 83 [2019-11-23 20:13:46,414 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 20:13:46,488 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:13:46,490 INFO L496 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2019-11-23 20:13:46,490 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:271, output treesize:130 [2019-11-23 20:13:48,789 WARN L192 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2019-11-23 20:13:48,792 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:13:49,253 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:13:49,465 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:13:49,466 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:13:49,468 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:13:50,271 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:13:50,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:13:50,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 30] total 56 [2019-11-23 20:13:50,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480142185] [2019-11-23 20:13:50,288 INFO L442 AbstractCegarLoop]: Interpolant automaton has 56 states [2019-11-23 20:13:50,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:13:50,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2019-11-23 20:13:50,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2851, Unknown=0, NotChecked=0, Total=3080 [2019-11-23 20:13:50,292 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 56 states. [2019-11-23 20:13:51,727 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2019-11-23 20:13:52,791 WARN L192 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2019-11-23 20:13:53,401 WARN L192 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 81 [2019-11-23 20:13:53,799 WARN L192 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 86 [2019-11-23 20:13:54,171 WARN L192 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 88 [2019-11-23 20:13:54,635 WARN L192 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 85 [2019-11-23 20:13:55,141 WARN L192 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 83 [2019-11-23 20:13:56,251 WARN L192 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 96 [2019-11-23 20:14:03,154 WARN L192 SmtUtils]: Spent 2.72 s on a formula simplification. DAG size of input: 183 DAG size of output: 122 [2019-11-23 20:14:43,326 WARN L192 SmtUtils]: Spent 39.38 s on a formula simplification. DAG size of input: 216 DAG size of output: 125